Type the last part of your new custom URL in the text box. We will show you how you can enable automatic tracking of all outbound links in Google Analytics with WordPress. To use custom campaigns, you add UTM parameters to your URL which are then recorded in your custom analytics report.
You might be listing them all on your site's main page and linking them to the relevant content page. See if you are using Classic Analytics (ga.js) or Universal Analytics (analytics.js).