If you've used data validation in Excel before, you probably selected the relevant cells, clicked "Data Validation" in the Data tab on the ribbon, and created the rule in the Data Validation dialog ...
Ran out of allspice? Discover the best substitutes, along with the right ratios to use, and when each option works best.
You can use ISERROR to test whether a value or the results of a formula are an error. It will return TRUE if it detects an ...