Hi. I'm not sure where you've determined that I'm referencing an Excel document - my question title states PowerPoint and when you asked for further clarification I said I had created a 'workbook' for someone to work through ticking responses and choices - not an Excel worksheet.In an Excel workbook:
Insert a checkbox (either Form Control or Active-x ) directly onto a worksheet
Cancel Design Mode if required
Click on checkbox (to check)
Click again on checkbox (to uncheck)
However the functionality you describe is of course exactly what I want (just in PowerPoint (and not in slideshow mode)).