Hosting a scotch tasting of 6 to 8 scotches: How much should I pour?

I am hosting a tasting for a bunch of people. I have bottle pour measurers of various amounts (1/2 oz, 5/8 oz, 1 oz, and I could get 3/8 oz or 1/3 oz pourers too), so I should be able to be precise in how much I put in each gl. Given that we are going to taste 6 or 8, and this really is a tasting not a party, how much of each should I pour?