There are two types of groups: public and private.
Public groups allow all individuals to join; no application is needed. Once you have joined a public group you can interact with members and resources.
Private groups require members to apply before joining. Some private groups post about sensitive topics and (potentially personal) experiences. Go to the About this group tab on a group’s homepage to learn about membership requirements.
A program administrator or group leader may choose to have a private group for identifying members, and a public group to include members and allies.
Go to the All Groups tab and check the group summary to see the group type (public or private).