Can you give some links to the "bunch of confidence calculators" that will help calculate traffic needed for an uneven traffic split?

I'm not sure.  I did look at the documentation and it was not clear to me what function I would use to get one item from each criteria to display.  Any pointers?

If I use a sequence criteria and there are multiples of items in the first criteria in the sequence, it seems to fill all 3 of my slots with items from that first criteria instead of just putting it in the first slot in the design.   Is there a way to have it put 1 from each criteria I have built?

I'd like to show 3 recommendations on my product detail page but I want to show one category of items in the first space, a mutually exclusive category in the second slot and a mutually exclusive categories of options in the third slot.I can't seem to find any documentation on how to do this.  Anyon...