Welcome to our forum.
From what I can tell, poly groups aren't usually "dating groups" per se, although they certainly don't restrict you from dating other members. They're just a means for getting together with like-minded individuals. What I mean is, it's not a high-pressure type environment.
On the other hand, you can also join groups or clubs that just specialize in something you're interested in. Doesn't have to be poly. Just stick to your guns about wanting anyone who may become a dating partner to be poly-friendly. There are poly people out there; some don't realize it, or they don't realize there's a word (let alone a community) for it.
At the same time, invest some time in reading up on various threads throughout this website. It will help give you an idea of what works, and what to watch out for.
Glad to have you aboard.
Love means never having to say, "Put down that meat cleaver!"