So the Solver SOP does this, where when you dive inside it while it is locked, it takes you down past the locked layers and into an unlocked Geometry DOP. How do you set something up like this? Say I want to make an HDA with a subnet inside that is down several levels. How do I leave it unlocked and instantly accessible like that?

When you create a digital asset, look for the “node tab” in the “type properties”.
There you can define you subnet as a dive target and make it editable

Documentation [www.sidefx.com]

This is exactly what I was looking for. Thanks!

Does anyone know if there is a way to set the dive target with hython? I'm checking the documentation and do see anything.