glennw

There are many settings that can be adjusted while trying to create materials list including what floors/categories to include, material list defaults, the method of selection, calculate materials in room, calculate materials in polyline, etc........then there are the settings that need to be further defined like: and: An object will be counted in the Materials List if its center point is located inside the room. Once you have all the ducks lined up it should work pretty well.

It sounds like using a reference plan may do what you want.

Just a wild guess, but...If you are still having trouble, have a play with Preferences>Appearance>Contextual Menus>

Have you had a play with Symbol Moldings?

I am not 100% sure of what you are doing. But isn't this one of those situations where you need to have a small horizontal return to join the eave and gable moldings properly. If you can't draw it, you can't build it...or the other way around.

You can also use the Import button in the Toolbar Customisation>Configuration panel to import toolbars.

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.