Checklists/Sign Up Sheets Notifications

I notice that if we assign someone to a checklist or sign up sheet they get an instant email once we save. I don’t mind the emails as the troop leader since I get tons of emails anyway, but if I make multiple of these at a time, the parents would get annoyed very easily. Is there a way to have this feature optional, or if we do multiple have them sent in one email to parents?