glennw

X5...really?

I have done it in the past using a Terrain and then converting to a symbol Here is a very quick one

It is a Molding Polyline on floor 2 Roofs, Trim layer which is locked.

Uncheck Auto Build Terrain You should see this icon next to the cursor:

As for part 2 of your question. You can use the break tool to break the section line and pull the 2 (or more) sections independently.

Have a look in the help file for Symbol Molding. Instead of extruding a molding along a Molding Polyline, Symbol Moldings are 3D objects that are spaced at intervals along a Molding Polyline. You could also use a Distributed Path.

Try the Polyline Distribution Region and/or one of the other Distributed Objects tools.

Do you have Grid Snaps toggled on?

Have a look down the bottom of the Plan Defaults dbx for Opening Indicators.

It seems to be working in X16 for me.

I would normally just throw an invisible wall across the recess and auto build.

Can you post a plan

Can you be a bit more specific. What tool are you using to align what with what. I am guessing you might be talking about the Angle Snap Grid? But if so, have a look at Preferences>Edit>Snap Properties>Snap Indicators>Display Angle Snap Grid. And Preferences Edit<Behaviors>Primary Movement Method>Polar.

You can use a Molding Polyline with 2 moldings specified with appropriate offsets - one for the shelf and one for the rail.

I think you can do what you want by creating a Plan View with the Poche Walls option checked.