Calculate causes any formula or function that provides a result for changes
initiated by time, event or manual input to actuate and produce that result.
It is only necessary when you want to use the data that it produces.

"DTTODGG" wrote:

Hello-

Could someone kindly explain what "calculating cells" does and does not do?
I have a pretty big spreadsheet that is getting out of control. Reading
other posts, it looks like I could set to "manual calculate". But, this is a
shared file and I don't know if the other person would know to "calculate or
not to calculate" - that is the question!

If the other person is only doing data entry, sorts and filtering. could I
set it for manual calculation?

Specifically, when and what and why does it calculate?
-If I copy a row that has formula or vlookups, do I need calculate on?
-Do I need calculate on when it first opens and does the updating of cells?
-If I have it off and open the file, will it update incorrectly or not at all?

Thank you for your time.