Restrict one session per user for collection

Hello,

I have 2 RDS Hosts behind an RD Gateway, RD Broker.

Is there a way to restrict each user to only one session in a Collection ?

I am using User Profile Disk (UPD) on a file share.

I can restrict one user session on each host, but since I have 2 hosts, the user can log on to the second host if there is already an active session in the first host. The second session ends up with a temporary profile when the user logs on because the UPD is already in use for the first host.

How do I configure it such that a user can only have one session when launching any RemoteApp from the web browser ?

Thank you for any help.