Is it possible to only update the result of a formulas on a woorksheet
when a particular condition is met.

I would like to have a button that when presses updates the worksheet.
The reason is I have a lot of formulas referencing other worksheets. I
update this info daliy. Everytime I change something it slows me down
waiting for all the updates. I what to make all my changes and then
update my main worksheet.

Thanks