Consultants · problem and fix
How to stop rebuilding past consulting work from scratch in PowerPoint on Mac, 2026
You stop rebuilding past consulting work from scratch by keeping a small library of your own finished decks and sections, then copying only what you need. On a Mac, PowerPoint for Microsoft 365 appears to have dropped Reuse Slides, so you copy and paste or copy the slide master instead.
The short answer
- Keep one searchable library of your own finished decks, with a plain naming rule.
- Copy the slide master to match an old look. Copy slides only when you need their content.
- Strip client names, old figures and logos before any slide leaves the original project.
- Reuse Slides appears to be gone from PowerPoint for Microsoft 365 on Mac, so plan around copy and paste.
What finding and adapting past decks and sections costs you
Search time before the real work
Atlassian's 2025 survey says leaders and teams waste 25% of their time searching for answers. It covers knowledge workers, not consultants, and it is self-reported. A deck hunt is that kind of search. Every minute you spend looking is a minute you do not spend on the client answer.
Rework that drifts from the source
A rebuild starts from memory, not from the finished version. Numbers shift, footnotes vanish, and chart styling changes. Someone senior who saw the first version may spot the difference before the client does. Fixing those gaps takes time you did not plan for.
Lost context and repeated thinking
A 2018 study of one consulting engagement found junior consultants struggled to reuse senior partners' past solutions. They lacked the background that made those solutions work, so they generated new insights instead. Rebuilding an answer that already exists is one way that gap shows up.
Confidentiality slips
Old decks carry client names, internal figures, logos and sometimes contract details. Paste one into a new client deck without cleaning it, and you may reveal more than you meant to. Check your employer's rules first. For regulated clients, the rules on client data apply without exception.
Formatting cleanup
Pasted slides bring their old theme, fonts and layouts with them. Fixing that by hand takes time, and the deck can look almost right while still being off. Choosing the right paste option avoids much of that work.
Why it happens
Files are named by project, not content
A folder named after a client and a year tells you where a deck came from. It does not tell you what the slides say. When the only label is Final v7, you open file after file. A clear naming rule matters more than a deep folder tree.
Outlook buries decks in threads
Many decks arrive as attachments. The file lives inside an email thread, not in a shared folder. When someone replies with a new version, the older one stays in the thread. Search finds the email, but it may not surface the one slide you need.
Advice travels, files do not
The 2018 Waisberg and Nelson study describes partners who built general lessons and told junior staff to reuse past solutions. The juniors came from different backgrounds and worked in different contexts. The lesson traveled. The file did not carry the reasoning that made it fit, so people rebuilt the work.
The built-in reuse command went away
Reuse Slides let you browse another deck and bring slides across one at a time. SlideCamp reports Microsoft removed it from PowerPoint for Microsoft 365 in January 2026. People who learned the old path now look for a command that is no longer there, then start from blank.
Time pressure favors a blank slide
Microsoft's 2025 Work Trend Index says 80% of the global workforce reports lacking the time or energy to do its job. Interruptions arrive on average every 2 minutes. Under that pressure, a blank slide looks like the fastest path. The search looks risky. The post does not measure this for consultants.
Templates carry looks, not answers
A slide master holds fonts, colors and layouts. It does not hold the argument, the data or the client's question. Teams that keep only a template library still rebuild the content each time, even with perfect styling.
How to fix it
These work with or without any app.
Set one naming rule and one library folder
Pick a folder you can reach from any Mac, such as Documents or a OneDrive folder your team already uses. Name each file in the same order every time: client code, topic, month and year, then status such as final or clean. Save the rule as a short text file inside the folder so you can find it again.
Index each deck in an Excel sheet
Create a sheet with these columns: file path, topic, sector, slide numbers worth reusing, and a sensitive flag. Add one row per deck. Use Data > Filter to sort by topic or sector. A plain grid is enough to start, and you do not need a paid tool.
Make a clean copy before you share
Open a copy, not the original. Use File > Save As, then delete client names, old dates, hidden notes and sensitive tables. Use Find to locate client names, then replace them with a neutral label such as Client A. Save the clean copy in the library folder with the word clean in its name.
Copy the slide master before you copy slides
Use View > Slide Master in the old deck, right-click the master in the thumbnail pane, and copy it. Paste it into the new deck's master view. Microsoft says this copies the master and its layouts only. Then copy the slides you need and pick the paste option that matches the new look.
Paste with the right option every time
Choose Use Destination Theme when the new client template should win. Choose Keep Source Formatting only when a chart or diagram needs its old colors. After you paste, check each slide for stray fonts and mismatched sizes. A quick check now saves a rework pass later.
Duplicate a strong deck instead of starting blank
Open the strongest past deck and use File > Save As. Save it under a new name with the new client's code. Delete the slides you do not need, then update titles and numbers. This keeps the structure that already worked. It also keeps the old data, so review every number before you reuse it.
Tag every deck when a project closes
Before you close a project, add one row to your index. Note the topic, the sector and which slides worked. Put a reminder in Apple Reminders so the step does not slip. A tag takes a moment now and saves a search later.
Search your mail for the deck, not the file name
Outlook search finds emails by sender, subject and attachment name. Search for the client's name with the word deck, then filter to messages with attachments. Save the latest version to your library folder. Leave the original thread as it is.
Most consultants do not lose their week to making slides. They lose it to finding the slide they made last spring. You open a folder, search a few names, then give up and start blank. That restart is the cost this page is about.
Why the old file is hard to find
Most decks are saved by project, client or date, and the names rarely say what is inside. A file called Final v7 tells you nothing about its market sizing slide. Outlook makes it worse. The deck often lives as an attachment in an email thread, not in a shared folder. Finder search matches names and some file contents, but a useful slide buried in a long deck is easy to miss.
The cost is real, even though no study measures it for consultants. Atlassian's 2025 survey says leaders and teams waste 25% of their time searching for answers. That survey covered knowledge workers, not consultants. Microsoft's 2025 Work Trend Index says employees get interrupted on average every 2 minutes. When your attention keeps breaking, a blank slide feels faster than a search that might fail.
25%
of time leaders and teams spend searching for answers, per Atlassian's survey of 12,000 knowledge workers and 200 executives
State of Teams 2025, Inside Atlassian80%
of the global workforce says it lacks the time or energy to do its job, per Microsoft's 2025 Work Trend Index
The 2025 Annual Work Trend Index: The Frontier Firm is born2 minutes
average gap between interruptions from a meeting, email or ping, per the same Microsoft post
The 2025 Annual Work Trend Index: The Frontier Firm is born4 months
of ethnographic fieldwork in a 2018 study of one consulting engagement and reuse of past solutions
RePEc: When the General Meets the Particular (Organization Science 2018)
A worked example: adapting a market sizing section
Say a partner asks for a market sizing section for a retail client. Last year you built a similar section for a grocery client. The deck exists. It sits in a folder called Projects, and its file name is a client code you do not recognize. Your first move is not to open that file. Write down the questions the partner asked. Then search the old deck for the slide that answers each one.
Copy only the slides that answer those questions. Paste them into a clean copy of the deck that already has the retail client's master. Then fix the client name in titles, the source footnotes, and any chart that still shows old data. Add a short note in the speaker notes that lists which numbers are live. The next person will not have to guess.
Where reusable material usually sits on your Mac
- Your Documents or Desktop folder, where project decks often end up after a quick save
- A OneDrive or SharePoint sync folder that your firm shares with the team
- The Downloads folder, where attachments land when you open them from Outlook
- Outlook attachments inside old client threads, which you find with the Outlook search box
- An external drive from an earlier job, which may hold the only copy you have
Why Reuse Slides is not the shortcut it used to be
For years, Reuse Slides let you browse another deck and bring slides across one at a time. SlideCamp reports that Microsoft removed it from PowerPoint for Microsoft 365 on Windows and Mac, and from PowerPoint for the web, in January 2026. A moderator's accepted answer on Microsoft Q&A, a community forum, gives a reason. It calls the command a duplicate feature. That answer lists different removal dates, so the exact timing is unclear. I could not find an official Microsoft support page that confirms the removal.
Copy and paste, the slide master, or a duplicate: which to use
| Method | What it carries | Best for | Watch for |
|---|---|---|---|
| Copy and paste slides (⌘ C, then ⌘ V) | Slides with their content and formatting | A few slides that answer one question | Old theme or layout may come along, so check the paste options |
| Copy the slide master (View > Slide Master) | The master and its layouts, not the slides | Matching fonts, colors and layouts | It brings no content, so you still copy slides |
| Duplicate the deck (File > Save As) | Everything, including notes and old data | Starting a new deck from a strong past one | Old client names, dates and hidden data stay |
| Open the deck in a new window, then File > Save As | The whole file as a starting base | Reworking a deck with many changes | Same risks as a duplicate |
Paste options decide how much of the old look survives. Microsoft's master copy page names two choices, Use Destination Theme and Keep Source Formatting. Use Destination Theme takes the new deck's colors, fonts and effects. Keep Source Formatting keeps the old theme. For client work, Use Destination Theme is usually the safer default, because it matches the current template. Pick Keep Source Formatting only when a chart or diagram needs its old colors.
Copy the slide master step by step
- Open the old deck and the new deck in PowerPoint.
- In the old deck, choose View > Slide Master.
- In the thumbnail pane, right-click the master at the top and choose Copy.
- Switch to the new deck, choose View > Slide Master, and paste the master there.
- Pick Use Destination Theme or Keep Source Formatting from the paste options.
Microsoft's steps describe the master copy, and it copies the master and its layouts only. I did not run these exact clicks on a current Mac build. If a menu name differs on your screen, trust what you see and check the Help menu. Then copy the slides you need as a separate step.
A routine for finding and adapting past sections
- Write the question the new slide must answer, in one line.
- Search your index first, by topic and client type, not by file name.
- Open the two or three best candidates and note their slide numbers.
- Copy the slides you need into a clean copy of the deck, never the original.
- Remove client identifiers, old dates and old footnotes before anyone else sees the file.
- Add the new deck to the index with a one-line tag and its date.
The index is the step people skip. Without it, every search starts from zero. The routine takes longer on the first pass, then gets faster as the index fills in.
Mistakes that make reuse slower than rebuilding
- Copying the whole old deck when you need one slide. You then spend time deleting most of it.
- Pasting with Keep Source Formatting by default. You inherit an old theme and fix it by hand.
- Skipping the client name check. The old title stays on the new slide.
- Saving the cleaned copy over the original. The client history disappears with it.
- Indexing by file name only. The name tells you the project, not what the slides say.
- Searching for old work on deadline day. Rushed searches push people back to a blank slide.
Client data, confidentiality and your employer's rules
Old decks carry more than slides. They carry client names, internal figures, logos and sometimes contract terms. Before you reuse a slide, remove anything the new client should not see. Check your employer's rules and any confidentiality clause in the contract. If your client works in a regulated area such as healthcare or finance, follow your employer's rules on client data without exception. When you are unsure, ask the person who owns the client relationship.
Edge cases: when not to reuse a past deck
Some past work should stay in its folder. A deck built on a retired pricing model will mislead a new client. A market figure from an older year may be wrong now. A slide made for one sector may read oddly in another. Check the date on every number before it moves. If a number has no source in the old file, leave it out or rebuild it from a source you can open.
What the research does and does not show
The evidence here is thin. Atlassian's 25% figure is self-reported and covers knowledge workers, not consultants. Microsoft's 80% figure is about the whole workforce, and the post gives no sample size. I found no study that measures whether a reuse workflow cuts hours or errors. Treat the routine on this page as a practical habit, not a proven time saving.
The closest study is an ethnography by Waisberg and Nelson, published in Organization Science in 2018. It followed one consulting engagement for four months. Partners urged junior consultants to reuse past solutions. The juniors struggled, because they lacked the context behind those solutions. That is a warning about context, not a measure of time saved.
Where Lazur fits in this routine
Lazur helps with the parts you cannot see at a glance. Ask where the slide master lives, and Lazur draws a circle and a label around it. Ask how a paste option differs, and it answers out loud. Ask it to walk you through a copy, and it guides one click at a time, waiting for each click. It does not click for you, and it does not edit your decks.
Lazur listens and looks at the screen only while you hold the shortcut, ⌥ ⌘. Lazur says audio and screenshots go to AI providers to answer, and they are not stored. Your firm may still forbid sending client slides to any AI tool. Check that rule before you ask about a client deck.
Next steps and related guides
Start with the file you need this week. For the slide steps, read How to add speaker notes in PowerPoint on Mac and How to change slide size in PowerPoint on Mac before you paste a slide into a new template. Keep your index in a sheet, and read Excel for consultants on Mac if you want more templates. Your email trail is covered in Outlook for consultants on Mac.
Pick one deck this week. Tag it, strip it, and save it to a folder you will remember. The next time someone asks for a section, you start with your old work, not a blank slide.
Faster with Lazur
Where Lazur helps with finding and adapting past decks and sections
Hold ⌥ ⌘ and say what you want. Lazur sees your PowerPoint window. Lazur draws a circle and a label around the button or menu you need.
- 1
Hold ⌥⌘ and talk
- 2
Lazur draws a circle and a label around the button or menu you need.
- 3
You stay in PowerPoint. Nothing to copy into a chat window.
More things to say in PowerPoint
- “Where is View > Slide Master in this deck?”
- “What does Keep Source Formatting change?”
- “Walk me through copying the slide master.”
- “Draft a one-line tag for this deck's index row.”
- “Hold fn to dictate notes into the index cell.”
- “Remind me Friday to clean the new deck.”
Free for 3 days, then $18/month. Download for Mac
You say“Where is the slide master in this deck?”
Lazur · points at itLazur circles the menu item and labels it. You then choose it yourself.
What consultants say to Lazur for this
Each one is a single hold of ⌥ ⌘.
“Where is View > Slide Master in this deck?”
Lazur draws a circle and a label around the menu item, so you can find it without hunting.
Points at it
“What does Keep Source Formatting change?”
Lazur answers out loud, so you know which paste option keeps the old colors and which takes the new template.
Explains what's on screen
“Walk me through copying the slide master.”
Lazur guides you one click at a time and waits for each click. You stay in control of the file.
Walks you through it
“Draft a one-line tag for this deck's index row.”
Lazur drafts the text. You paste it into your Excel sheet yourself, since Lazur does not edit files for you.
Drafts it
“Hold fn to dictate notes into the index cell.”
Dictation types clean text at the cursor in any app. Snippets and a personal dictionary help with words you repeat.
Types what you say
“Remind me Friday to clean the new deck.”
Lazur sets an Apple Reminders item, so the cleanup does not slip past the deadline.
Handles the small stuff
A plan you can start this week
- Day 1
Set the folder and naming rule
Create one library folder you can reach from every Mac you use. Write the naming rule on one line and save it as a text file inside the folder. Use the same order for every new file from today on.
- Day 2
Index last year's decks
Open the decks from the last year that you are most likely to reuse. Add one Excel row per deck with topic, sector and the slide numbers that worked. If a file will not open, note it as a gap and move on.
- Day 3
Make one clean copy
Pick the deck you used most. Use File > Save As, then remove client names, old dates, hidden notes and sensitive tables. Save it with clean in the name. Check your employer's rules before the file goes anywhere.
- Day 4
Test the master copy
Open one new client deck and one old deck. Copy the slide master from the old deck into the new one. Try each paste option, compare the results, and write down which one you would use by default.
- Day 5
Add reuse to project close-out
Make tagging part of every project close. Add the deck to the index, save the clean copy, and send yourself a short email with the folder path. Use Outlook search to find older threads when you need one.
Questions people ask
Is Reuse Slides really gone from PowerPoint on Mac?
SlideCamp reports it was removed from PowerPoint for Microsoft 365 on Windows and Mac, and from the web, in January 2026. A moderator's answer on Microsoft Q&A gives a similar reason. I could not find an official Microsoft support page that confirms it. If you run perpetual Office 2024, SlideCamp says the command may still sit under Home > New Slide.
Can I copy a whole section from one deck into another?
Yes. Select the slides in the thumbnail pane, press ⌘ C, then press ⌘ V in the other deck. Check the paste options after you paste. Slides may pick up the new deck's theme, so review fonts and colors on each one.
Does copying the slide master bring my slides with it?
No. Microsoft's master copy page says it copies the slide master and its layouts only, not individual slides. Copy the slides as a separate step after you copy the master.
Is it safe to reuse a past client deck?
Only after you check your employer's rules and any confidentiality clause in the contract. Remove client names, internal figures and logos first. If the client works in a regulated area such as healthcare or finance, follow your employer's rules on client data without exception.
Which PowerPoint versions support copying the slide master?
Microsoft lists PowerPoint for Microsoft 365, PowerPoint 2024, PowerPoint 2021, PowerPoint 2019 and PowerPoint 2016 on its master copy page. Your exact menu labels may still differ, so check Help if a name does not match.
Does Lazur work on Windows?
No. Lazur is a voice assistant for the Mac, on Apple silicon and Intel. Windows is planned, not available.
Does Lazur edit my decks or click buttons for me?
No. Lazur points, explains, guides and drafts text. It does not click buttons, edit files or operate other apps for you. You stay in control of every change.
Does Lazur send my slides to AI providers?
Lazur says it listens and looks at the screen only while you hold the shortcut. It says audio and screenshots go to AI providers to answer, and they are not stored. Your firm may still forbid sharing client slides with any AI tool, so check that rule first.
Is there research proving that reuse saves time?
Not that I could find. The best figures are vendor surveys that are not about consultants. The closest study followed one consulting engagement and found junior staff struggled to reuse past solutions without context. No study I found measures hours or errors for reuse workflows.
Sources
- State of Teams 2025, Inside Atlassian · Atlassian · checked 2026-11-09
- The 2025 Annual Work Trend Index: The Frontier Firm is born · Microsoft Official Blog · checked 2026-11-09
- When the General Meets the Particular: The Practices and Challenges of Interorganizational Knowledge Reuse · RePEc (Organization Science, INFORMS) · checked 2026-11-09
- Copy and paste a slide master from one presentation to another · Microsoft Support · checked 2026-11-09
- Why are Microsoft retiring the re-use slide feature in PowerPoint? · Microsoft Learn Q&A · checked 2026-11-09
- PowerPoint Reuse Slides Is Gone: How to Reuse Slides in 2026 · SlideCamp · checked 2026-11-09
Fix finding and adapting past decks and sections with Lazur, free for 3 days
Hold a key and ask. Lazur sees your screen, points at the button and talks you through it, in any Mac app. No credit card.