Trying To Freeze A Sheet

I have multiple sheets as part of my excel calculations which refer to the first sheet in the group. Each one calculates different values for me based on the numbers I put into the sheet.

So to put in these numbers, I insert new rows to the start of the sheet which is what I always want it to calculate. Some of the calculations are comparative to other points from my original page. So I might ask it to go back and compare to 3 months ago or 6 months ago.

Long story short, when I insert those new rows, the formula on the other pages shift down to stay on the previous days data. How can I lock it in so it stays focused on just the cell I tell it to reguardless of how I move those cells around. So when i hit insert, I still want it focused on that sheets A1 and NOT A2.

I attempted to look up the help section but since I am having a hard time putting this into words, help was not much "help".