Sometimes you may wish to extend an existing promotion rather than entering a new one, and there is a simple trick to getting this done. Select {Promotion Management} from the {Inventory Tab} and find the promotion you are looking to extend under the left heading Promotion Name.

Once that promotion is selected you can hit {Edit Promotion} to reset the date range by clicking on the end date and selecting a new date from the calendar. Once you have set the new date for one item you can right click the end date column and select ‘set all’ to change the end date for every item in the promotion. This process can also be used to change the description, position, and sale price for every item in a given promotion.