Schoox supports events that users may register and attend. You are able to see the procedure of registering users in an event here: How to register users to an event?
But how can you unregister them from an event?
In order to unregister users from your event, navigate to your Administration panel, and under Live Sessions/In-Class Trainings select Manage Events.
Find the event in question, click on the Manage Event option, and then select Unregister Users.
You have the option to unregister specific individuals (Individual Unregistration) or you can select a group of employees based on their job and location (Advanced Unregistration).
After the user selection just hit Unregister.