Calendar modes or select all / hide all option in calendar dropdown

As a hybrid user, using Morgen for both private and work tasks, I don't always need to see all the tasks on my calendar. I'd like to be able to create groups of calendars as a group that I can toggle between. So for example I'd be able to select my work calendar and my commute calendars and turn those on, and the others off. When I'm home, I'd turn off these groups and turn on my chores calendar and my appointment calendar.

I'd be able to save these groups as favorites to swap between them easily.

Alternatively a simple Hide all / Show all option for calendars would suffice for now as well.