How to Set Up Copilot Skills in PowerPoint (and Build Your Own)

You have a deck you rebuild every month. The business review, the project update, the readout for leadership. Every time, the same work. Cut the bullets down. Fix the capitalization someone else broke. Take 20 slides down to 7 so an executive will read it.

Copilot in PowerPoint does all of that, and it’s good at it. Then next month you open a new deck and type the whole thing out again, because Copilot doesn’t remember how you like it done.

That’s the problem skills solve.

I help organizations roll out Copilot in front of thousands of users, and skills are the feature I see the fewest people using. Plenty of teams are paying for it and have never turned it on.

 

 

What a skill is

A skill is a pattern you wrote down once.

Take the thing you explain to Copilot over and over. Put it in a file with a name, a description, and a set of instructions. Save it. From then on you point Copilot at the skill instead of retyping the prompt, and you get the same result without rebuilding it.

Monthly business review formatting. Your team’s deck standards. The way you like speaker notes written. All of it becomes something you call by name.

Two things before you start

A Microsoft 365 Copilot license. Skills live in the Copilot pane inside PowerPoint. No Copilot in your Office apps, no skills.

Choose Your Model.  Open the Copilot pane, you can leave the model to “Auto” or find the model picker, and switch to your preferred GPT or Claude model.

**Update** Skills in PowerPoint should now work with both OpenAI and Anthrophic models

Turning skills on

Open Copilot in PowerPoint. Hit the plus button at the bottom of the pane, then Choose skills.

You’ll already have a few there from Microsoft. Run one before you build anything of your own.

You can also call a skill by name. Type @ and the skill name in your prompt, the same way you’d mention a person, and Copilot runs that one. Once you know what you have, it beats going through the menu every time.

I opened Background and context on a text-heavy slide and asked it to visualize the slide. It created a new slide and generated an image that carried the same information in a format I could read at a glance. Side by side with the original, it wasn’t close.

Skill plus prompt

The image was good, and it was an image, so I couldn’t edit any of it.

So I asked, in plain language: I like this, can you make it more native PowerPoint so I can edit it? Keep the structure.

It rebuilt the whole thing with real PowerPoint objects and kept the layout that made it work. I wasn’t running any branding at that point and it still came out clean.

Skill first, then prompt. That combination is where most of the value sits. The skill gets you 80 percent of the way with no typing, and the prompt handles the part only you know.

Building your own

Go back to the plus button, Choose skills, then Manage skills. There’s a Custom skills section, and it’ll be greyed out until you have skills of your own.

Don’t hand-write the skill file.

Grab Microsoft’s documentation page, the one PowerPoint links to from the Manage skills pane:

https://support.microsoft.com/en-us/powerpoint/copilot/copilot-in-powerpoint-skills

Paste that URL into Copilot and say: using this link, help me build a PowerPoint skill that does X.

Copilot reads the requirements and writes a file that fits the format. You’re using AI to build AI, and it saves you more than typing. Skill files have real formatting rules, and Copilot will meet them instead of you finding each one through a failed upload.

The format itself is short. A skill is a folder with a SKILL.md file in it. The file opens with a frontmatter block between three-dash delimiters holding a name and a description, and everything below that is your instructions. Spend your time on the description. That’s the part telling Copilot when to reach for the skill, so a vague one means it never fires.

If somebody sent you a skill, paste that in too and let Copilot clean it up.

Where skills live

In Manage skills, if you’ve never set this up, you’ll see an option to create your skills library. Click it and Copilot creates the folder in your OneDrive.

Pay attention to the path, because you’ll need it:

OneDrive > Documents > Copilot > Microsoft PowerPoint > skills

Each skill is its own folder with a SKILL.md file inside. Drop new skills in there and they show up in PowerPoint.

One catch: after you add something to OneDrive, refresh PowerPoint. It has to reload the folder. If you added a skill and it isn’t showing, that’s usually why.

The other one that will bite you is the folder name. It has to match the name inside the SKILL.md file. Copilot skips any folder where those two don’t line up, and it skips it quietly. No error, no warning, the skill is missing. If you refreshed and it’s still not there, check that next.

Two ways to add a skill, and the limit on one of them

You don’t have to touch OneDrive at all.

In Manage skills, Add skill lets you upload an .md file, or type a skill in by hand with a name, description, and instructions. PowerPoint builds the folder structure and the file for you.

I lost time on this one. The box where you type or paste a skill in caps at 1024 characters. I had Copilot write me a few skills, they came out longer than that, and I got errors that didn’t explain themselves. I built them with Copilot, so I assumed they were fine.

That cap is on the typed box. Uploading an .md file, or dropping the folder straight into OneDrive, doesn’t have it. So if you have a long skill, don’t cut it down to fit. Upload it as a file instead.

Three skills on one bad deck

Here’s what I have built:

• Brand check. Reviews wording, terminology, and capitalization against our team’s deck standards. No layout changes.


• Handoff notes. Writes speaker notes for someone else to deliver. I write the deck knowing I might not be the one presenting it, and my notes are useless to anybody but me.


• Slide diet. Takes a long deck, cuts the fluff, consolidates what’s left.


• Slide design. The visual pass.

I ran three of them on a plain deck, in order.

Brand check went first. Text only. It consolidated some lines, rewrote a few, and fixed capitalization.

Slide diet went second. It broke walls of text into bullets and cut what wasn’t earning its place. Five bullets beat a paragraph block, and it made that call without being told.

Slide design went last. This is the one where you sit back and let it work. Black text on white turned into something branded and visual, with the information in an order that reads.

Three skills, and a deck I didn’t want to read became one I’d present.

Brand kits

One more thing in that same plus menu: Brand.

A brand kit holds your colors, fonts, and icons. You can build one for yourself, or your organization can publish one for everybody in the tenant. Pair a brand kit with a design skill and decks come out on-brand without anyone checking hex codes by hand.

What it cost and what it saved

The full run took 30 to 40 minutes, and the design pass was about 10 of that. Copilot needs time to work through a deck. This isn’t instant.

Building that by hand, at the quality it came out at, is 4 to 8 hours. A full day.

The documentation

Microsoft’s page for all of this is here:

https://support.microsoft.com/en-us/powerpoint/copilot/copilot-in-powerpoint-skills

It has the format requirements, the three ways to add a skill, and how to edit or delete one. Worth a read before you build your second skill.

One thing that page points to is worth knowing: the SKILL.md format is an open spec, not a PowerPoint invention. So the skills you write here aren’t stuck in PowerPoint.

Where to start

Pick the pattern you repeat most, not the hardest deck you own.

Write down what you’d tell a new hire about how you do it. That’s your first skill. Hand it to Copilot, let it write the file, drop it in the folder, refresh PowerPoint.

Then be curious, and go push some buttons.