dab tuning?

[Bry Dog]

hi,

i recently bought a 66plate 1.5 cdti focus titanium and im having issues with the dab tuning?

 

from what i see on the screen it has dab 1 dab 2 and dab 3

i think the dab 1 are the bbc stations 

so i went onto the dab 2 setting and pressed scan and drive to work this morning (15min drive) and it was going through the channels and playing bits of the radio station then changing to another one, does the scan button go off when all the stations are stored?

some dab stations that i prefer have not been found as of yet so im a bit confused as to what or if im doing anything wrong?

 

any help would be great