Autodesk Forge DWG layout pre selection

I’m using Autodesk Forge to view DWG file in browser. It was successful. One thing I’m trying to figure out right now is how to do pre selection on which layout to view in Forge viewer. When I upload DWG into the bucket, there are several layouts available in document browser

Autodesk Forge document browser

I have a lot of drawings and some of them didn’t display ‘Layout2’ (which I wanna display in viewer) on first load. I need to open the document browser and select ‘Layout2’ manually.

How do I do like pre select on ‘Layout2’ every time the viewer load.