Intro to collaboration in Keynote for iCloud
You can collaborate with others in real time by sharing a link to your Keynote for iCloud presentation. Shared presentations and any changes to them are saved in iCloud, and people working in the presentation see the changes as they’re made.
As the owner of the presentation, you control who can open it, and what they can do:
Presentation access: You can send a link that anyone can use to open the presentation. Or, you can invite specific people who must sign in with their Apple ID to open the presentation.
Editing permission: You can choose whether others can make changes to the presentation or only view it. You can also choose whether participants can invite others to collaborate on the presentation.
iCloud requirements
If you set access to allow anyone with the link to open your presentation, they don’t need an iCloud account or Apple ID to view or edit the shared presentation.
If you invite only specific people to collaborate on your presentation, they must be signed in with an Apple ID and have iCloud Drive turned on to view or edit the presentation. See Accept an invitation to collaborate.
Minimum system requirements
To view or edit a shared presentation, people you share with need any of the following:
A Mac with macOS Big Sur 11 or later and Keynote 12.1 or later
An iPhone with iOS 14 or later and Keynote 12.1 or later
An iPad with iPadOS 14 or later and Keynote 12.1 or later
A Mac or Windows computer with a supported browser
Note: If you want to allow participants to invite others, you and those participants need macOS Monterey 12 or later, iOS 15 or later, or iPadOS 15 or later with Keynote 12.1 or later.
Anyone with an Android device, or an iPhone or iPad that doesn’t meet the minimum system requirements, can view, but not edit, the presentation.
In Keynote for iCloud, you can invite others to collaborate on individual presentations. To share multiple presentations at the same time, use the folder sharing feature in macOS Catalina 10.15.4, iOS 13.4, or iPadOS 13.4, or later. To learn more, see the macOS User Guide, iPhone User Guide, or iPad User Guide.
Note: If your presentation is stored in Box instead of iCloud, you can still collaborate using the collaboration controls in Box. See the Apple Support article on using iWork with Box.