You will need the Full Write Events permission. Deleting a whole event needs it at every campus of the event, with the event's calendar allowed at each one. Deleting some dates of a repeating event counts as an edit, which needs it at just one of its campuses.
You can delete a single event, some dates of a repeating event, or a whole repeating event.
Deleting an event
Open the event and choose Delete from the Actions menu in the top right.
If the event repeats, choose what to delete: Delete One, Delete Future or Delete All.
In the confirmation, type the word Delete and click Confirm Delete.
Deleting dates vs deleting the whole event
Deleting some dates and deleting the whole event follow different rules.
Delete One and Delete Future count as edits, as long as at least one date stays. Anyone who can edit the event can use them.
Delete All, or deleting an event that doesn't repeat, deletes the whole event. That needs Full Write Events at every campus of the event, with its calendar allowed at each one.
Removing the last remaining date deletes the event, so the whole-event rule applies.
For example, a repeating Tuesday class sits at North Hills and Lakeside. Nora has Full Write Events at North Hills only. She can remove one Tuesday, or all future Tuesdays, because that counts as an edit. She cannot delete the whole class, because that needs both campuses. The screen tells her that her access does not cover every campus of this event, so she can delete dates but not the whole event.
Warning: When your access doesn't cover every campus of an event, the options you can't use are hidden rather than refused with an error. Delete All disappears from the choice screen, Delete Future disappears on the first date, and Delete is hidden on an event that doesn't repeat. If your access is limited to certain campuses or organizations, you can never delete an event available to All.
Who can edit an event
Because deleting some dates counts as an edit, it is open to anyone who can edit the event:
a Super User
an administrator of the event's group, including staff with Limited Write Groups at the group
a group member with the Events setting
a named organizer
anyone with Full Write Events at one or more of the event's campuses, with its calendar allowed
A named organizer of a date that isn't part of a group can remove that date, or that date and later ones, without Full Write Events, as long as another date stays. Delete All is not offered to them.
Good to know
A group's event follows the group's delete rule. A limited person with edit access to the group can remove a date.
Events that come from eSPACE cannot be deleted here.
Bulk delete from the events list works row by row and reports any rows it skipped. A repeating event is removed only when every one of its dates is.
Who can create, edit and delete a record? explains the edit and delete rules for every kind of record.