Schoox supports events that users may register and attend. You are able to see the procedure of registering users in an event here: Registering Users for an Event
But how can you unregister them from an event?
In order to unregister users from your event, navigate to your Team Workspace, and select Instructor-Led Training -> Unregister Members in the left navigation bar.
On the top, select whether you are looking for an In-Class Event or Virtual Event and find the event in question.
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 you can chose to leave a message and unregister the selected users by hitting Unregister.