You are likely to have some special offers sometimes. If there is a one for this product, tick off the check box ‘Add this Product to Special Offers section’ and then enter the text for special offer. You can edit the text in many possible ways (highlight it, change the colour of the font, align the text, etc).

Also, you can add image for you special offer by clicking on the Add image button. In order to save the changes, please click the 'Update' button. Both the product and the description (with an image if you chose the one) will be shown in the 'Special Offer' block on the main page.