Something about class numbers and custom subscreens

[Majora]

I want to add another whole row to selectable Items and i'm trying to put a slot for a red and green potion. I need to know what numbers are needed to be able to select the extra row worth of items.

also, how can you make a green potion and a red one? I think it's possible because the Z-Items are like a limited Item Editor/Creator, but I just need some help. Thanks in advance:D

[Joe123]

You could make the tiles for the two potions that stack on top of each other, one red and one green?

[Majora]

what I mean is 2 separate Item slots. 1 is a Green Potion that restores only magic, in another slot I want a red potion that restores only Life. For the Blue potion, I will keep the default potion slot and check the "red potion disappears when used", and the "cant combine potions" rule. I need to know the up, down, left. & right select numbers