If you are flying a 450 or larger, you should use two satellite receivers.
Attach the satellites to the 720.
From the Utility option on the top menu, select Bind Sat Rx's on Power Cycle.
Disconnect the 720 from your computer. When you power on, you will bind just like you were using a blind plug. Press the bind /range test button on the back when you power up. When the sat lights stay lit, the unit is bound to your Tx.
Note: the text at the top left is the name of the saved file containing the setup for this heli. Click on Send Setup or Press F1.