Banning a member is a function available to all admins in the group. When a member is banned, they are permanently removed from the group and are unable to rejoin. It's important to note that bans are not reversible.
Admins have the authority to enforce group rules and maintain a positive and inclusive environment. If a member's behavior or actions warrant disciplinary action, such as repeated violations of group guidelines or disruptive behavior, an admin can choose to ban them from the group.