Group, Association and Organization Events

I think I got confused because you are using 2 account, so I split the topic before I realised.
Like many plugins, options become only available after you activate the main option.

But back to GD:

“To join, you must submit a listing to that group, and that is how GD lets you charge to join a group.”
I am a visual person. It would be great to see some screen shots on the “steps” to do this.
Yes it seems that this would work but I am stuck on the sequence on how to present this to the end user and how to implement on the back end.

The steps would be:
1. You create a custom post type called Groups
2. Then create a category called Group1 and Group2 etc.
3. Fine-tune your custom fields etc
4. Set up packages to join the “groups” for a fee.
5. Now users can select a package to join Group1 or Group2 and add their details

I was not describing groups, I was just describing GD categories and called them “groups”.
BP integration shows activity and listings etc, so a user that just “joined a group” (read: submitted a listing to a category called group) will have that listing linked from his profile.

Can you back to base, and describe what you mean with group?
A group of listings, or users or what? Why do you want a group?

GD Events is multisite compatible.
BP allows you to create groups and control who and how can be joined.
There is no plugin existing yet that allows visitors to book for other users’ events. All event booking plugins currently on the market allow booking if YOU run an event site at YOUR place, not for booking of OTHER users events.
Together with a membership plugin like S2member you could control payment for joining groups and then allow event posting only for paid members etc.