If you add one desktop to one activity, it’ll add one desktop to all activities.
Which is not good, if it could each activity and it separate desktop.
hi, welcome.
this is one of several often asked for aspects of the Activities feature, but is unfortunately not possible at present.
the only way to achieve this at present is to create a separate user and switch to that user when working on “activities” that are specific to that use case.
someday it may be possible to fold all of the separate user preferences into Activities, but for now it’s limited to only a select few things like background images and desktop widgets.
the Activities feature could be greatly improved, but resources to work on it are apparently thin.