Enable annotation when Sharing Camera

Meeting SDK Type and Version
Meeting SDK for android version : v5.16.10.17706, custom UI

When I share the camera in the meeting using shareView.setShareCamera(videoController.selectedCameraId) I am not able to trigger annotation. (here “shareView” is a MobileRTCShareView)

I want to recreate the behavior similar to the official zoom app and the zoom default UI example where the annotation option is available to the participants and the camera will be paused when annotation starts.
(The custom UI example also has the annotation tool bar appear during sharing the camera, but annotation does not seem to work)

Pointers on how and when to trigger annotation would be greatly appreciated.