You may want to consider a report instead of a formula on an object depending on what your requirements are. Please post as much data as possible so that we may best help you.
Did you ever solve your problem? You've asked quite a few questions concerning it, although none have a best answer marked. Could you mark best answers for them? What solution did you find?
Could you add more infomration on it what exactly you want to calcualte may be then I could suggest something.
- What do you call an Employee, is it User Records ?
- What do you mean by employee present in a Month, is it the number of employee on first of month ?
ThanksShashikant