Create a placement
To create a placement:
In your DFP Small Business account, click the Inventory tab, then click Placements on the left-hand panel.
Click New placement.
Enter a placement name and description (optional).Naming tips
When naming your placements, you may choose to describe the physical location of the ad units associated with the placement, or a particular theme or section of your content.
ABCProducts Unlimited Help Center Footer Banners: This placement might include all footer banners within Products Unlimited's Help Center.
ABCProducts Electronics Home All: This placement might include all ad units on the home page of the electronics section of the site.
ABCProducts All Homes Top Banners: A placement of this title might include all ad units on the home pages of all sections of the ABCProducts site.
Associate ad units to the placement by clicking include next to the desired ad unit. (You can complete this step later if an ad unit doesn't exist yet.) Each placement should include a unique combination of ad units.
(Optional) Select Google AdWords to make this placement available for AdWords advertisers to target (Learn more).
(Optional) To copy targeting settings from a pre-exisiting AdSense channel, click Copy AdSense targeting.