I've done everything but I have to yell HELP!!!!

I installed the Eaglesoft hangar and i've put it in an airport which worked. My one problem is how do i dial 112.00 on the Com2/Nav2 radio??? I know how to change the channel on it it's just how do I transmit to it
HEEEEELP
BTW: I'm using the Eaglesoft Pointer Box.
HEEEEEEEEEEEEELP PLEEEEEEAAAAAAAAASE
Thank You

BTW: I'm using the Eaglesoft Pointer Box.
HEEEEEEEEEEEEELP PLEEEEEEAAAAAAAAASE
Thank You