Roster Pod is just an UI component that shows all the users. It will
show the users in room by default, you won't have to do anything unless
your anonymous presence is turned on.
If you want to get the users and their details, you should use
userManager.userCollection which is an ArrayCollection containing all
users. Similarly, if you want to get only hosts or only participants,
you should get userManager.hostCollection or
userManager.participantCollection and so on.
Hope this helps
Thanks
Hironmay Basu