Enabaling device and user mode

I am running freepbx 2.9 and I am trying to switch to device and user mode I have made the apporiate changes in amportal.conf but I see no changes to the UI I have tried restarting amportal to no avail

changes should not ever be made in amportal.conf since FreePBX 2.8. All changes in amportal.conf should be done in the Advanced Settings Module in FreePBX

after making the change in the advanced setting module. Nothing appears to have happend in the UI is there another step I am missing