Once you have selected the targeting parameters for your Line Item, you will see a section to associate your Creatives to the Line. Click the ‘Associate Creatives’ button and it will open a window where you should see the names or your Creatives uploaded to this Advertiser on the left-hand side. (For steps to upload Creatives see here: Creative Upload). We recommend associating multiple Creative sizes to the Line when possible to increase access to inventory. To associate a Creative, click on the green plus sign next to the name of the Creative. The Creative will pass from the left-hand side of the screen to the right-hand side to indicate that the Creative is associated.