Managing users’ group memberships

At minimum, a user must be a member of one security group, but can be in an unlimited number of security and message groups. Set up groups first, then add members.

  1. If not already in the user account you want to update, click Setup > Users and Groups, then click the hyperlinked name of the user you want to update, and click Edit in the View User window.
  2. In the Edit User window, scroll or jump to the Groups pane.
  3. In the Edit User window, click Save.
TIP: Quickly add/delete multiple group members

If you have multiple users to add to or delete from a group, do these tasks at the group level instead of the individual user level to save time. See Adding or deleting group members.

Reference
Step-by-step instructions