You need a sat dish which is set to the sats you need , if your dish is fixed. Now you need a different lnb for each sat . Each lnb will come with its own cable (feed) which needs to be fed to the solo2 . Now you can directly connect the cables to the solo2 as tuner A & B .Now if you use the disecq you will need at least 2 outputs to go to the solo2.
Basically you need 2 separate feeds connected to the solo2 to be able to watch one channel & record another .