Primarily you should do this at the vehicle order stage,
RAISE ORDER> THE CUSTOMER CATEGORY (SEE SCREEN SHOT) >SELECT FROM DROP DOWN "MOTOBILITY"
The other method for vehicles already with a raised order,
GO TO STOCK NUMBER> SALES STATUS TAB> NEXT TO SALES CATEGORY IS UPDATE BUTTON> CHANGE TO MOTOBILITY
The last method for customers you know are motobility but not showing as motobility currently .
GOTO STOCK NUMBER> SALES STATUS TAB>VIEW CUSTOMER BUTTON (Next to customer name) > ON THE TOP TABS CLICK ON PROFILES > THEN SALES PROFILES> FROM SALES CATEGORY DROPDOWN, SELECT MOTOBILITY> SAVE AND CLOSE