here is a video showing how to share screen on an ipad using Zoom -
https://www.youtube.com/watch?v=6uO2F1BIM5Mf
The basic principles are
Open up the zoom meeting
Go to the top of iPad screen and in the upper right click on green button - screen share
this opens up a window
Click screen broadcast - then start broadcast
to get rid of the broadcast box click anywhere
The green button in upper right has now turned red and the other zoom participants can see your screen
You are then able to share any application you want
To end the screen share go back to upper right corner and click on red button - stop sharing
You will then be back to the regular zoom meeting but have stopped the broadcast
If you want to enable other zoom participant to be able to screen share - go to top right and click on
participants - choose the person(s) you want to enable and this will make them co-hosts
To end meeting - click the red button on left ( End meeting )