If you have opted to select all the equipment yourself.
Follow the selection here for help.

The important part is:
Number of camera’s:-
Up To:- 4, 8, 16, 32, 64, 128

Image Quality:-
2MP:- Standrd
4MP:- Sharp
5MP:- Sharper
8MP:- Very Sharp
12MP:- Extremely Sharp

Just select the total camera’s you require & Image quality.