It's easy Helen:
In Customise, under Select Cup Generation Options, you have a main menu with four options:
Tea
Coffee
Chocolate
Other
Each of these has a dropdown sub menu
Tea: PG Tips; Tetley; Twinings Breakfast; Lapsang Souchong ... (etc)
Coffee: Java; Costa Rican, Peaberry, .. (etc)
Chocolate: Cadburies, Green & Black ... (etc)
Other: Horlicks, Bovril, Marmite, Yerba Mate ... (etc)
There will also being intermediate dropdowns so you can choose orgainic, fairtrade, decaff, etc.
Simples!