I have been searching to see if what I need can be done. This is what I am doing. There are twelve months. Each month has 4 weeks. I have week one as a training day with a list of twelve students. I also have another week one as a non training day. I did this for four weeks for every month. I did this on an excel spreadsheet in Microsoft Office Excel 2010. I validated each week with a name column and total hours per day. What I need to know if I can sum up the weekly totals from each month as a continuing tally. Any help is greatly appreciated.