This is probably a fairly basic question, but I'm not well versed with spreadsheets. I'm trying to set up a Numbers document that will allow me to keep track of payments made to me by clients. I'd like to have the rows contain client names, and the columns contain payments (i.e. Payment 1|Payment 2|....). I plan to leave 10 columns open for payments. The 11th column would ideally be a 'total paid' column that equals the sum of columns 1-10 on each row. I will also need a column where I can enter the total amount they owe, which would be column 12. That column would not be part of any equation, as I will obviously have to enter that figure manually. I have been playing around with a Numbers document for some time now, and I'm getting frustrated. Thanks for any help.