I hope this is what you mean. First, if they sent you a division order, you won't have a choice. This is not like a water flood unit or pooling unit if that is what you are thinking. This is like a well being drilled on your farm and you had all the mineral. You will be paid according to your lease. So if your lease say, 3/16% that is what you get, but it will be on the % you own. If your neighbor has a 1/5% he will get paid at that rate for his percentage that he owns.
Now on the division it won't be 3/16 as you don't own the whole thing, so it will be your percentage of the whole at 3/16. Not sure how they figure it now, but it used to be this way. Your take the whole, say 320 A spacing. Your farm has 160 A interest, so your group will be 1/2 of the total at what ever % your lease says, now you divide your group by the # Acres each person owns. That will give you your percentage that you will get.
Example: Where I live in Arlington, TX, we own 1/2 A and the Horizontal well is space on 316A. We signed a lease for 25%, so they take the amount of acres I have divide it by the number of acres the well is spaced at and then they take that at 25% to get my amount. So, the decimal has a lot of zero in front of it and the checks are small even though the well is good.