Trying out Square retail, is there a place to put the vendor info in when adding an item?

[JuliC]

Adding in items for the first time, how do I tie an item to a vendor?  This way when it runs low, I will know where to re-order from.  Also, not having the cost available when I imput an item is strange too, I know I can go under inventory management and add it, but that's an extra step.  

Thanks!

Juli