Can't Add Additional Kitchen Display

[AuthenticCafe]

I am using the free version of Loyverse. I would like to set up multiple kitchen display (Drinks station, Food Prep etc). Although I can create the various displays and link the ipads, when I try to select the food categories to assign to each Display, I can only select categories for 1 display. The other displays are greyed out and won't let me select categories. I am also having the same problem when I add a second store location. The Kitchen display won't work in the second store only the first one. Is that because I am on the free plan or is it something about the way that I have set things up? See attached for example. 

[Andy]

Hello. The KDS works the same and does not depend on paid services. 
Yes, you can assign each category only to one printer group. But you can select several printer groups for each KDS in the KDS settings.