Events Booking allows you to config it to allow users from the Joomla group(s) you want (usually Registered group) to submit events from frontend of your site. The events will then be checked and approved by administrators before it is being showed in the frontend. To see how to setup and use this feature, please read documentation at https://docs.joomdonation.com/eventsbooking/frontend-management/submit-event

Events Booking allows users with right permission to manage registrants (add, edit, delete, change status, checkin...) from frontend of your site. To understand how it works and how to setup this feature, please read documentation at http://eventbookingdoc.joomservices.com/frontend-items/manage-registrants#manage-registrants