A fixed dish is very easy, you only need to set the tuner to simple mode, depending on your fixed dish system, i.e. multiple LNB's, and a Diseqc switch, or single LNB for 1 satellite.
The motor, and fixed, satellite dish, is more tricky, and as I haven't tried it I'm not sure how to do it.
it would be easier to run 1 cable from your motorized dish, and 1 from the fixed dish, to the two tuners, on your Solo 2, bypassing the Diseqc switch, but there should be a way, of doing what you want.
I'll search the internet, later today, to see if I can find a guide.