The way curing works can be configured in the file _ProfitUI_Cures.txt in your ProfitUI folder. Open it in your favorite text editor, e.g. windows notepad. The file looks like this
To configure your own potions, you will need to enter that potion's VDL number. For example, if you want to use a Master's Arcane Remedy, look up the item in any link database (e.g. eq2llinks.com) and you get: \aITEM -569252760 -1028373465:Master's Arcane Remedy\/a. The first number, marked in yellow, is the VDL number (ignore the rest). Replace the preconfigured number with that one.