Setting up 'Date/time Stamp' in Debut video capture.
Thanks to Clemenzena for pointing me in the right direction on this. Here's a bit more detail.
Open the 'text caption' dialog box from the 'effects' menu or by pressing the 'A' button at bottom right. Then to enter the date and time in, for example, the format: day, month, year, hour, minute, second, enter into the text entry box: %dd% %mm% %yyyy% %hh% %min% %ss% exactly as shown. It doesn't have to be in this order. for instance you could use the month day year format. I find it useful to separate the date and time a little