Herro there, Runeru. If ye'd like to search for the many wonderful groups out there, I recommend you browse the "General Roleplay" board underneath the "Roleplay" category in the Index. Within that, you'll find other boards relating to it such as "Groups", "Free For All Roleplay", and "Advertising Board". I'm sure you'll come across a group you may be interested in.
If you are recruiting for your own made group, create a thread in the "Advertising Board" giving members the general information. State your plot, your intentions, and what you expect. Don't forget the rules as well, and never forget the application for new members to fill out if they desire to join.~ I know you'll have good luck with such, yar? c: Hope this helpz you out.