Combining brush boxes

Development Asset Creation
1

Is there a way to combine brush boxes?
I noticed there is a parent child option, but is there a way to merge them in to a single object?
If not, is there a way to do it with the basic objects?

Basically I made a castle fort with brush boxes and I want to build more stuff, but all of the pieces is making it hard to track what’s what.
I know it would probably make sense to just build it in another software and import it, but I find the primitives to be very accurate and intuitive for me.

Thx

2

You can combine multiple brushes into a static mesh, but combining them and staying as BSP you can’t. But BSP is not a good idea for a proper game anyway so static mesh is the better option