Please check this below link to discussion of disconnection a specific user from conference call

https://community.ringcentral.com/questions/91246/3waymerge-call-how-do-you-disconnect-a-caller.html

May this help

Thank you for the answer, yes I have already checked this discussion, there was an answer that its not possible to disconnect other members from conference on desktop version. But that topic was made almost a year ago, I was hoping that RingCentral may have this option now.