H2 Remote Start Question

[NIK1]

I have a 2009 H2 and with the factory remote start you can start it twice for 2 10 min run times. After starting it twice with the remote you have to use the key to start it.My question is how do you make it run for 20 min straight instead of the 2 10 min ones. I read somewhere maybe in the manual that it can be done by pressing certain buttons on the remote. Does anyone know the sequence.