When multiple data variables are accommodated in a project, the time and spatial grids of those variables must be identical. As such, you must control the data other people enter. That’s when you need ...

Select all the relevant cells, and in the Data tab, click the main part of the split "Data Validation" button. Then, click ...

Google Documents and Spreadsheets gets a little better with a new data validation option that will keep you and your collaborators from filling in the wrong types of data. Josh Lowensohn joined CNET ...