What are the Facebook group types and how do I change mine?

Only an admin can change the group type.
Each group type adds different tools to your group. Choose from one of the following 6 group types.
Group TypeWhat it Does
GeneralThis is the default group type and includes the standard set of tools.
Buy and SellThis sets the default post type in the group to sales listings, allows you to set a default currency and gathers all sales listings in one place in the group.
Social LearningThis allows you to create quizzes and lessons and track members' progress.
Video GamesThis allows you to link your group to a specific game and host tournaments for members.
JobThis shows a list of all open jobs and includes templates with job salary, location and hours.
ParentingThis lets group members request to post anonymously and seek mentorship from other members.
To change the group type in a group you admin:
  1. From your News Feed, click Groups in the left menu and select your group. If you don't see Groups, click See More.
  2. Click Settings in the left menu.
  3. Click next to Group Type.
  4. Select a group type and click Save.
You can change your group type at any time.
Note that if you change your group from a general group to another group type, you won’t be able to add or remove features — such as chats and Q&As — and you might lose access to some features.