Your technical information isn't the best, so please correct me, if I've read it wrong.
You have two satellite dishes, one pointing at Thor 0.8W, which has several satellites, co-located, including Thor 6. This has a twin LNB, 2 outputs, of which only one is being used, and the cable goes directly to Tuner 1.
The second dish is pointing at Astra 1, 19.2E, wiht several co-located satellites, including Astra 1KR, with a twin LNB, one of which cables goes directly into Tuner 2, on your VU+ receiver.
In which case you don't need to use the A,B,C,D options, as you aren't using a Diseqc switch.
You simply go into the Menu, Setup, System Searching, Tuner Configuration, Tuner A. Set this up as:
Configuration Mode - Simple
Mode - Single
Satellite - Thor 0.8W
Disecq - No
Then set Tuner B the same except Satellite - Astra 1, 19.2E.
Your setup is very basic and should be covered in the various setup guides.