I have the same question as this thread: https://theeventscalendar.com/support/forums/topic/add-event-login/
“Hello. Where is the template file to alter the page a visitor sees when they try to add an event but haven’t registered with the site? I’d like to add more text there.”
Yes, for the Community Events plugin.
Daniella,
Unfortunately there’s no page template you can edit to make this happen. However, you can add the following code to your theme’s function.php file to change the message that displays: