I have Rows 1,2 and 3 frozen, but when I scroll down, I want Rows 33-37, Row 43 and Row 53 to freeze when they reach to top so eventually I have Rows 1,2,3,33-37, 43 and 53 frozen at the top. Then as I scroll up they will automatically unfreeze leaving just Rows 1 to 3 at the top.