If both LNBs are Universal (LO 9750/10600) then you can't use a 22 KHZ switch.
If the LNB on the motorized dish is a Standard (LO 10750) then you would put that LNB on the 0 KHZ port (and off in the receiver).
Then you set up the 99 dish LNB with a LO of 10600 (do not set up as Universal) and KHZ in the on position in the receiver, and on the 22 KHZ port.

I am using 22 KHZ switches (as well as 4x1 and 8x1 diseqc switches) in my fixed dishes set-up quite effectively. In the past, I have used Universal LNBs on 22KHZ switches without any problem, as long as you follow the above set-up.