Default calendar options (busy/free/tentative)

This feature may be good to add to https://morgen.canny.io/feature-requests/p/associate-task-list-with-its-most-relevant-calendar.

For certain calendars, have an option to automatically lock Busy, Free, Tentative, etc and to lock the event Public or Busy.

The use case is for work calendars as an example, I would want all tasks associated to my work calendar made Free or Tentative.