I'm trying to build skyscrapers & some of the features seem to be missing for building doors & windows. How do you get doors & windows built into the walls?

I have been trying to build hollow building structures for my fps game, & the option for cutting holes into the walls seems to be missing from version 4.10… I think it was called “brush settings”. Please help because I would really like to get this game finished with this engine instead of switching to something else…

If you are using BSP Volumes you can set the Volume to be subtractive instead of additive to remove portions of the additive BSP volumes just size and place them where you want your doors and windows.