Open the Last Save Date/Time dialog in one of two ways depending on your version of TaskMap (refer to About TaskMap to determine which version of TaskMap in installed on your PC)
For TaskMap version 2 or earlier: Select Last Save Date/Time from Visio’s Insert menu (note that Last Save Date/Time menu is only visible when the active Visio window is displaying a TaskMap).
For TaskMap version 3 or later: Select Insert Last Save Date/Time from the TaskMap entry on the main Visio menu (note that the TaskMap menu is only visible when the active Visio window is displaying a TaskMap).
The following dialog will appear
Select the date/time format you prefer
It is often convenient to use the Last Save Date/Time in a shape on a background page in order to have the Date/Time appear on every page in your TaskMap.