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 the left navigation, make sure you are in the Team Workspace.
When in the Team Workspace, select Instructor-Led Training and then select Unregister Team Members.
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.