You are working in Auto$$s Sales Department as an analyst. The sales manager, Leroy Mason, wants to automate the worksheet he uses to calculate monthly sales commissions so that others can use it$.$ ABC Auto pays each salesperson a base salary plus a commission. This commission value has changed so this value for all new entries should be $7\%$ of the sales amount. Leroy asks for your help in ensuring users enter valid data and do not change or delete the sales data the workbook already contains. He also wants to include a chart comparing the total sales of each salesperson without revealing their names.