Set primary session host for custom group (users) without new collection

Hello,

for example I have two session hosts and one connection brokers with gateway role.

I want set primary session host for custom users group.

How I can do that?

Or can I do that at all?

Yes I can do new collection and Set-RDPersonalSessionDesktopAssignment but I have two session host and I want set priority for custom users not for all of them. Like LoadBalancing, but for some special group.

Thank you.