I have a stupid question but I'm a bit lost in Themaposter .

I bought it, my goal is to create a group with some forums (like exbii, intporn, warezusa etc...), then I create my topic and its posted on all forums of my this group.

I found how to set login to forums, I found how to create topic, but damn I didnt find how I can make such a group ?
I mean, I create a group like "Porn", I set some forums in it then when I create my thread, it is posted on all forums of the group "Porn".

Didnt find it on themaposter website.

Thank you .