Calculation Option back to Manual?

[touque]

I have created spreadsheets to use as timesheets. our supervisors adjust and create new workbooks every week.
On occasion the calculation option has defaulted back to Manual. Why is that? It does not happen very often.

 

[touque]

I assume that the supervisors are doing something inadverdantly to put the calc option back to manual. if I could figure out what they are doing I could possibly figure out a protection against this.

 

[Scott T]

Alt+M, X, M will set the calculation to manual. Maybe someone is trying to do a different short cut and turning off automatic calculation.

 

[touque]

That would make sense, I think you may have hit the nail on the head Scott.
Now I doubt there is a way to disable those short cuts?

 

[MARK858]

They may be doing it inadvertently as If the first workbook you open in a session has calculation set to manual then all workbooks opened after that in the same session will also be set to manual and so they will retain this setting when saved.