Notification settings for assembly & process admins

Is your feature request related to a problem? Please describe.
Our assembly admins are not happy that they either get notifications for all spaces & subjects they are following or none.

Describe the solution you'd like
An additional setting in the configuration of notifications saying “I want to get e-mail notifications only for the spaces I administrate”.

Describe alternatives you've considered
Having separate accounts for administrating spaces and using the platform. / Not following any other space, than the ones you administrate. In our case, this is not useful.

Additional context
-

Does this issue could impact on users private data?
No (E-mail address?)

Funded by
Maybe city of Lucerne, though we have very limited resources.