To add a check box or radio button to an Excel Spreadsheet, you must turn on the Developer's Tab and Ribbon. Click on the Office Button, select Excel Options, select Popular, select Show Developer tab in the Ribbon. This will give you access to the Developer Ribbon.
Once you have opened the Developer Ribbon, click on Insert, select the check box or radio button from the options.
To activate the box and button, save the spreadsheet as a Macro Enabled Spreadsheet. Click on the Office Button, select Save As, select Excel Macro Enabled.
Once saved the check boxes and radio buttons will be active.