Creating security groups from scratch
By default, the button is disabled on the Security Group page for new installations. We recommend that you use the Copy Security Group page instead. See Creating security groups from existing groups.
If you do want to create a blank security group from scratch, you must enable the button and modify the permission of the Security Group field to allow for changes.
           Note: When you add a custom security group, default permissions for the new group are added for forms and elements throughout the system. You should review these permissions to ensure that they are set according to your requirements.