Follow the instructions below to manually add a managed placement

1.Sign in to your AdWords account at https://adwords.google.com.

2.At the ad group level, open the Networks tab.

3.On the Display Network table, click show details next to Display Network: managed placements.

4.Click + Add placements.

5.Select an ad group.

6.Add a target URL, omitting "www." Use the placement tool to generate a relevant URL.

7.Click Save.