This is actually my daughter's meet up group. We're not sure exactly what it will involve yet since this will be our first meeting. We envision letting the children decide what they want to do, and letting the parents decide what they're able and willing to do. Then we'll go from there. It will probably be something we do once per month or maybe twice at first. We don't want to overwhelm people.
The main thing we don't want to do is raise money for causes. We want the children to get involved directly in some creative way.
As to the meetup.com question, have you signed up and joined the group yet? If you do that, more information is available.
Check your email for updates.