Groups?

are groups just for the title or is there a way to make like a place to talk in that one group?

You can make it whatever you want. You can add a section for that group and no others can view it. By doing that you need to go into Admin Panel>>General Tab>>Categories & Forums>>Click on any section>>Permissions>>Click what you want that group to do>>Save

Repeat if needed.

im talking bout is there a way i can make it so like when somebody joins my group they get a message with a pass to that certain part of my forum for only that group to talk?

No, that is not possible here on forumotion