Hi Arun,
Thanks for the reply. Our sample app has a similar implementation:https://github.com/zoom/zoom-sdk-android/blob/master/mobilertc-android-studio/sample/src/main/java/us/zoom/sdksample/ui/LoginUserStartJoinMeetingActivity.java#L288, you can change the behavior to https://zoom.github.io/zoom-sdk-android/us/zoom/sdk/InMeetingService.html#leaveCurrentMeeting-boolean-.
Hope this helps. Thanks!