You can edit or remove your saved Security Groups within the Security Group menu. Click the menu icon to the left of the Security Group to select Edit and/or Remove.

These functions perform as follows:

Edit:  Allows you to modify the Security Group.

Remove:  Allows you to permanently delete the Security Group. Any users currently assigned to this security group will be unable to perform any further actions in the system as a member of this group.

Once you select Remove, a pop-up will appear and ask you to confirm your decision.

Click Remove Item  to remove or No thanks, I changed my mind  to return to the menu without deleting.