Download the Structured Data File
In the upper right corner, click the
menu and select Download SDF.
If prompted to select the resource types, ensure Ads is selected, and then click Download.
Look for a column named something alone the lines of Landing Page URL Suffix, and enter campaignid=${CAMPAIGN_ID} for all the ads you want to track.
Upload the modified file
Go to Advertisers, click the
menu and select Upload.