This might be a silly question, but I just got stuck and couldn't think of a solution. I want to create a new line item showing the max of an existed line items. Take the example below, I want to create a new line item called max days, which takes the max of Days.
Original:
Days
A 1
B 2
C 3
D 4
New:
Days Max Days
A 1 4
B 2 4
C 3 4
D 4 4