For example, in the users groups screen :
- At the top, add a group, delete a group. There is no button "Confirm changes" which appears, the changes are automaticaly saved
- at the bottom, add a user, next remove a user, for each changes you have to confirm changes.
We should uniformise behaviors.
We can not save changes each time a user is added or remove in group.
The changes have be global to avoid multiple requests to server.
On the other hand, to add/remove users from a group, the group should exist .. and what a pity to ask for confirm changes in this case.