There are 6 types of Facebook communities. You should choose the one suiting to your needs.
Grow and manage your group with the standard set of group features
Buy and sell:
Create and manage sale listings · Specify currency in a post
Link group to a game · Host tournaments for members
Organise posts into a unit or series of units that members can see
Get templates with job salary, location and hours · Show a list of all open jobs
Work: Show only work related info, Allow members to contact each other without adding them as friends.