How do I make YAF act as the other DNN modules so I can use it on multiple portals without interfering with each other?

Right now when I sync the users on a YAF board it syncs ALL users from ALL DNN portals which doesn't make any sense! The whole point of having separate portals/boards is to not mingle them all together, no?

Also there's a Host link on the first board I created but not on the others so I can't customize settings for my boards.. yes the 'Host user' box is checked under settings and the user has admin rights in DNN.

How can I fix these issues and have fully functioning, separate boards for my different portals?

Thanks,
Rob