It is possible to set up an one-touch menu which allows categories, subcategories, and products to be displayed at the same time on the iPad POS Platform.  

Steps

1. Go to the Management Console

2. Go to Settings > Basic POS settings and check "enable one touch menu."

3. Refresh each of the POS stations for the changes to take effect.

Below are two example pictures to show how the menu looks on the iPad POS with and without the one-touch menu.

Menu on the iPad POS with the One-Touch Menu ENABLED:

Menu on the Ipad with One-Touch Menu DISABLED: