I’ll be brief.
WE CAN NOW CHANGE CALLSIGNS HELL YEAAAAAAAAAH
NO MORE HAVING TO REJOIN THE DAMN GAME
Basically, once you input your initial callsign, a text button with your current callsign pops up on the radio. If you accidentally put the wrong callsign, or you’re switching teams and need to change callsigns, you can click the button to bring up your team’s callsign menu to reinsert your callsign.