When you need to leave a meeting where you are the host, tap End Call.
To transfer the host and let the meeting continue without you, tap Assign host automatically and leave.
Webex will automatically designate a new host, and end the meeting for you only.
Transfer Host and Leave a Meeting on Webex Boards, Room and Desk Devices
By transferring the host, you can leave a meeting you are hosting and let the other participants continue without you.