simple question on Adding and Subtracting Brushes

If one were to create a shape by first creating a bsp brush box, and then add a subtractive brush to intersect with it to create a desired shape, is there a way to make the merge permanent and remain as a brush? I’ve tried to go through as much of the documentation as I can but I can’t seem to find the answer. Basically, the resulting shape should then be the only shape that shows up in the World Outliner, rather then both brushes. It is not allowed to parent brushes it seems so I want to make it easier to move things around, so instead of moving the two shapes, I could simply move the one resultant shape created through the intersection of brushes. I hope that’s clear. Thanks.

Sorry for replying to my own post, but is it that nobody knows the answer? or perhaps its a dumb question, and if so, I apologize!