VU+Duo2 2 motorised dishes help

pig11

Vu+ Newbie
hi all
I have the vu+duo2 with 2 motorised dishes ,tuner A used with one and tuner B for the other one
I like to know if when I record from tuner A it uses tuner B but after the recording has finished Tuner B is still used.
How can it go back to using only tuner A when I don't what it to use tuner B?
I have satellites stored 1-7 for Tuner A and 1 for tuner B stored on 20 .
Hotbird on tuner A is stored on 3 and on tuner B I have stored it on 20.
what have I done wrong
thank you all
 
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