User insights / Settings |
That user would not be able to see that app in the Dashboard, but could still go back and change their permissions to Viewer or higher again.
Yes. They can also modify the permissions for other apps in the org as well.
An app Viewer is only able to view the app data and not much more than that. A Marketer is like a Viewer, but they can also run Attribution and Messaging campaigns.
An Admin should remove them using
.Check with an organization Admin to request access.