Hmmm, I thought of a potential solution. We could maybe use the 'Characters' Section as a second IC?? I could add all of your character sheets to the Atlas (considering that's what it's there for anyway).
<Snipped quote by Famotill>
As in one party RPs and then the next party would RP after that party finishes their quest/RPing?
Also, would both parties ever join together to form one big party RP?! :D