UBB.threads PHP Forum Software Community Forums UBB.classic UBB.classic 6 Support Adding An Additional Forum(s)

Just curious folks...

I'm running 6.7.0. I'd like to add an additional forum or two to the forums I have running now. My question is~

Is adding additional forums as easy as it appears? After I ad the forums is there a lot of maintenence that needs to be ran? And lastly, will the board have to be closed in order to ad the forums?

Thanx in advance for your help!