If authorized, members can handle members of a scene. This can be done by clicking on 'Members' in the menu on the left of the page.
Here you can invite members to the scene, but can also add them. If authorized, the list of invited users can be seen and the members can be evaluated.
If you would like to add or invite a user to a scene, click on 'Members' on the main page of the scene, in the left side menu.
If applying to the scene is permitted, the application of users has to be approved by an administrator of the scene. To do this, click on 'Applicants' in 'Members'.