Usergroups are a way for you to create groups of users, based on some criteria that you find appropriate. You don’t have to use usergroups—in the default phpBB installation, no groups exist—but this can be a useful feature.

Users access the usergroups by using the Usergroups top navigation menu icon. You as an administrator can also use this link; it gives you some administrative options as well. When accessed by a group moderator, this link also brings up the interface for moderating a group.

Every group has a moderator. This community member is responsible for managing the group, and is not to be confused with a forum moderator. Group moderators have no special privileges over the forum topics or postings; they have special privileges only for the group they are moderating. They can add and remove members from the group, can accept or deny membership applications and can change a group type.

What types of groups exist? A group can be open, closed, or...