UBB.threads PHP Forum Software Community Forums UBB.threads Version 7/8 Support How to get space for advertise using the Island?

I read that someone was doing advertise using the Custom island on every page of the forum.
Now, I can't find that post any more (it was months before).
Do you know how and what do I need to create a Custom Island with advertise on each page?
I do have my Rotation Script for banners to apply, so I just need to know how would be the format on the Custom Island.

Thank you