So I've been tasked with recording sales results for our sales staff. Basically I have about twenty reps and I'll be putting in the details of their sales each day. What I need is for it to tally up totals for each sales person. I don't know if it be best to keep the running totals in a separate sheet. I used to use Excel a lot ten years ago and did a lot of things like this but I could use some reminding please.