How do I specify a special price on a product for a specific timespan?

It is possible to adjust a specific price of a product at “Sales channel TV screens” and “Sales channel Webshops”, you cannot do this at the product selections. Go to the overview of all selected products at “Sales channel TV screens” and “Sales channel Webshops” to adjust the special price of a product. You do this by clicking on the current promotional price and entering the desired price.