To create a new ad via AdNabu, one needs to create a url template and an ad template. Usually these would be automatically created from your existing ads but you can create new ones from the ad dashboard.
First of all you need to create an ad template.
Once done, create the url template. Put the destination url in the url template. Destination url is the page the user lands after clicking on the ad.
Once these templates are created, go to the campaigns dashboard and select the campaigns in which ads needs to be pushed and click on push ads. You can select the newly created ad template and url template and push the new ads.
One can also push ads in specific ad groups of a search term. Go to a campaign or campaign group detail view and select search terms and click on push ads.