The following license activation example was done on a PAN-OS 9.1.1 VM.
It is assumed that the authorization code (authcode) is readily available.
Log in to the web interface of the firewall:
Select: "Device" then "Licenses" and click “Activate feature using authorization code”. Enter the authorization code and click “OK”:
Click “Ok” on the warning pop-up window:After a couple of minutes, refresh the webpage and the activated firewall features will be displayed under Device > Licenses: