Welcome to the Forum
Here are the steps you need:
1) Open Maintain Sessions
2) Go to the Original session that should activate (zoom to) the new session. Make sure you are in the current VRC.
3) Click on Edit (form editor should open)
4) Go to the field that you want to zoom from and edit it.
5) Go to the zoom tab and fill in the name of the session and returned field (see attached image).
6) Save & compile.
I hope it helps,