To run a retargeting campaign, you will need to master three concepts in BidTheatre DSP:
Setting up a Segment
Manage segments by entering Supply / Segments:
Click New Segment to set up a new segment
It suffices to choose a name and advertiser.
Once the segment is created, click the </> sign on the row of the segment to inspect the script tag.
The tag should be set up to fire on the pages of your website that you would like to retarget.
Setting up an Audience
In the campaign, either setup retargeting as the default campaign audience, or on an individual bid strategy.
Click the + sign beside the Default audience dropdown to create a new audience.
Choose target "User - In segment" and find your newly created segment in the Value dropdown. Click Create to add the target.
Close the audience, and don't forget to save!