Pinning a chat
Pin a Rhazes chat session to keep it at the top of the sidebar instead of letting newer conversations push it out of sight.
Updated
Open the menu beside a session in the sidebar and choose Pin.
Pinned sessions move into their own Pinned group above Recent and stay there however many new chats you start. Everything else sorts by when you last touched it, so an unpinned chat you care about will drift down over a busy week.
Unpin the same way when you no longer need it held in place.