How do i Merge Buildings?

I want to know how to make building get close to gather I'm working on a map and i can't fit building in some spots or close to gather and i want to know how to merge but most of all is getting building to fit in a small spot so some1 please help me!|||I'm really not sure what you're asking here, but it sounds to me as though you've got a problem that could be solved by temporarily disabling pathing of the building in question. The option is under Pathing in the 'unit' section of the Object Editor.|||Thanks it let the building i wanted to put in small area go into other building but i can not do it to its own building it wont let the building that i made of it be put to gather. Sigh 1 problem after anther!|||oh wait never mind it was collision size i put it to 0.00 and it worked and thanks for helping a noob