Okay, another thing, so the check box on the column that has a check box. Is there some way where we can put a check box, actual check box in there, and once they are all checked, they mark the whatever reference sheet, whether it's mom's hybrid brain stack or mom's stack updated, whichever one it is we decide it is, then can it mark that day as done in the done column, and then change the cell color to a lighter color, maybe a 90 or 80 or 75% gray or whatever it's called, we can decide later, and can it do that automatically update that?