In order to add AudienceData segments to your campaign in DBM, please follow the steps described below.
In DBM, select "Default targeting"
Click on "Add targeting" and then "Audience list"
Now select the tab "1st and 3rd party".
In the search field, type in "AudienceProject" (in one word), in order to find the segments.
When you have found the segment in the audience list, simply tick off the segment you want to add from the list.
The segment is now added to your line item.
If you have questions in regard to this, please contact your Google account manager or firstname.lastname@example.org
Normally, we would add screenshots to improve your user experience, however, Google prefers to assist their clients directly. If you need further help, please contact DBM.