Categories use PLU selections to group up the PLUs and display them on a dynamic screen element making them an easy way to display the customers PLU list.
Once the PLUs have been added to the system then go to Assistants/PLU selection and create the new category. Here you want to edit the name for display and add the PLUs that need added. I also tend to add a few extra blank PLUs after the PLUs end to allow the user to add new products by editting the blank PLUs that have been prepared already.
Once the PLU selection is create then go to Assistants/Buttons and find the Category button levels. These categories use two different buttons; Function 28 = Button level - This changes the category display to display different levels of categories. Basically allows for more categories
Function 141 = Button sel. w. no. - This places the selected category in the selected button area
You will also need another Button container that is used to display the PLUs in the category. Inside it needs;
Function 142 = PLU selection pos. - to display the PLUs in the PLU selection
Function 143/144 = Button sel. offs. -/+ - to adjust the display so it shows the next PLUs if they overflow to a second page
The Category buttons then just need set to display the PLU selection in the desired Button Container. Go to the category button container and edit the code on Function 141 buttons. The code has two parts, one number referencing the Button used to display the contents of the category, and another number referencing the category to display separated by a forward slash.
For example, your button container for displaying PLUs uses button number 6, and you want to display category 2 in this area. The function 141 will need the code 6/2.
You will find all your buttons will have the same button number, so if displaying category 2 uses code 6/2 then category 3 will be 6/3.
Once that's in place you should be set. Test the functionality and make sure the PLUs are being pulled in right.