After you send a session collaboration invitation, the Session Collaboration user interface turns into a dashboard that shows the current state of the shared remote desktop session (collaborative session) and enables you to take certain actions.
For administrators - You can prevent the hand-off of control to a session collaborator. For Windows remote desktops, see the Allow control passing to collaborators group policy setting in the Horizon Remote Desktop Features and GPOs document. For Linux remote desktops, see the collaboration.enableControlPassing parameter in the Linux Desktops and Applications in Horizon document.
Prerequisites
Start a collaborative session. See Invite a User to Join a Remote Desktop Session.