problems with my MKS-50 - No B group patches

Hi there.

I just got my used mks-50 up and running and it reset the factory
defaults but it only loaded the patches into the A group. Whenever I
switch to the B group, it just says Init Tone. How do I access the B
group patches?
I'm REALLY new at this. My first midi intrument here. Any help would
be amazing.

Thanks!
Corey