If you find an Event created by another team member (or former team member), Clone that Event and you will be the Owner of the new Copy!
First, find the Event by using the Search bar or the Sort and Filter options.
Then, Duplicate the Event by clicking on the three vertical dots then selecting Duplicate
From here you can click Done or choose to rename the event, then click Done.
You will be the Owner of the new Copy. Move forward in the new copy (and delete the older version, if necessary).