Having two BSPs' faces be flush in level ue4

I was wondering if there is any option I could click to in order to get the faces of two BSPs (Say two Cubes) flush. One of the faces is angled. Is there a tool that could join them together or is the option to only do it manually?

UE 4.4.3

Hi Brad,

There is no check box or option to do this automatically. You can use the orthographic views (Top, Side, Front) to rotate it and manually place it though.

Tim