Sage 100

I'm new to these products and a bit intimidated by the extensive documentation. Before I waste a lot of time trying to make a change to a production system work correctly, I'd appreciate a simple answer: Is what I want to do possible with these products…

When I use Sage 100 Customizer to add customized panel, I noticed each panel has a W version, eg, In the task of Sales Order Entry, there's a DMAIN and a DMIANW. What's the difference between the two? Can I set the default display to be DMAIN instead…