Access the Opnsense System menu, access the Access sub-menu and select the Groups option.
Add a new local group on the OPNsense firewall.
On the Group creation screen, perform the following configuration:
• Group name - opnsense-admins
• Description - FreeRadius group
• Member of - optionally you may add the roou user account.
Click on the Save button, you will be sent back to the Group configuration screen.
Now, you need to edit the permissions of the opnsense-admins group.
On the opnsense-admins group properties, locate the Assigned Privileges area and click on the Add button.
On the Group privilege area, perform the following configuration:
• Assigned privileges - GUI - ALL pages
Click on the Save button to finish the configuration.