The "do license" is probably referring to adding more port licenses but if the system is configured as a 4X8 then you don't need to add more port licenses. You can do certain programming (certain programs require Winadmin) from a 3020 or 2020 display phone if all you want to do is make minimal changes but you will need the manual in front of you. Before hunkering yourself down for some programming, power the unit up and see if all the programming was already done.
