Group Administration doesn't allow you to delete group members, but you can change their status to Inactive to prevent that user from performing any of their normally permitted actions until their status is changed back to Active.
1. Sign In
On the Group Administration home page, select the group the users are currently in.
2. Click Configure > Members
3. Add Users to Security Group
Use checkboxes to select all the users you wish to move to another group.
Click Actions > Edit User Status.
Select Active or Inactive.
Click the Save button to apply changes to all selected users.