How do I delete a shared calendar in OurCal?

You can delete any of a group's calendars in OurCal, along with all of its events.

From OurCal's Settings (tap your profile picture in the top left of the calendar):

1. Tap Calendars
2. Tap the calendar you'd like to delete
3. Tap Delete Calendar & Events

Remember, deleting a calendar removes it and all its events for every member of the group. Synced external calendars can't be deleted this way — open the sync and tap Delete Sync instead.