Before you add any calculations or checkboxes ... click the "Number Format" drop-down menu, and select "Time." By default, ...

If you want to add parentheses in Excel, here is how you can do that ... First, you need to open the spreadsheet and select a column where you want to extract the first two digits.

You might also need to include discontinuous regions in the selection. To accommodate these situations, Microsoft Excel includes multiple options for extending and adding to selections.