Login to Bongo4U Admin Mode.
Hover over the "Products..." option on the Page menu, hover over the Category that contains the product to be edited, and click on the name of the product. If you don't have a "Products..." option on your Page menu, then refer to help entry "How do I Enable my Site for Products".
You will see the Edit Products form.
Note: A product is considered "on-promotion" if: (a) it has a valid date specified for both its Promotion Start Date and Promotion End Date; and (b) today's date is between or on these start and end dates.
Enter a valid date in the Promotion Start Date and Promotion End Date fields. These dates could represent an upcoming future period of time, allowing you to pre-schedule the promotional period.
Optionally, enter a Promotional Price. If entered, this price will be emphasized during the on-promotion days, but it will not be displayed on non-promotion (regular) days. It is an optional field.
Click any of the "?" help links beside each field for details or suggestions.
Click the [Save Changes] button to store your revisions.
Additional Info: Read the "How do I take a Product Off Promotion" entry.