No, for each event, you’ll be able to choose one person from your team as the Event Owner. This can be changed/updated at any time and does not impact permissions or access to the event itself.
That person will be the default user included on communication to attendees for that event. You can CC other team members and edit the default point person on those emails.
Check out this article for more information on how to communicate with candidates through the Events platform.
Regardless of the Event Owner, everyone on your team who has a RippleMatch login and access to that specific event will be able to view and edit the event.