Whether you upgrade the firmware or not you can get additional licenses in Roger On iN V2.
Go to the very botton of the page and download the Rodger Upgrader:
Hearing Aid Microphone - Roger Upgrader | Phonak34
Roger Upgrader is designed to upgrade the firmware of Roger wireless microphones and Roger loudspeaker.
Connect the Roger to your computer, open the upgrader and select “Read device data” and if the Roger is not full there will be a button to put more licenses in the Roger.
You can also update the Roger On software as well as the software in the base if you have one.
I have not figured out the difference between V2 and Roger 3 yet. Maybe someone can enlighten me.