I have made a attendance sheet which i'll have to distribute in many departments. I fear that my adversaries (who are everywhere) may try to manipulate the formulas. My Boss says that i do not have to give a protected sheet as some features in the sheet ( Like Grouping & UN-grouping of Columns) does not work when the sheet is locked. So, please help me here. I have too many enemies in our firm. I'm sure someone at some time will surely try something to spoil my name.