Permissions for edit suscriptions to other users

Hello,

People in the studio complains they receive many email notifications everytime another person is creating or changing something in Shotgun. In my case, as an Admin, I can suscribe or unsubscribe for any notification of any person in the studio through the People Page. But seems the rest of people aren’t able (i.ex. Managers).

I checked the permissions for Manager group and the ‘Edit’ option for Suscriptions is checked but grayed. And the ‘hint’ text on it only says ‘(Custom)’. But I don’t find the way to review and change that custom configuration.

How can I change this option so everyone is able to adjust their subscriptions to the activity of the rest of the people.

Thank you!