To deliver ads to viewers, you need to set up orders, populate them with line items, and add creatives to the line items.
1. Click the order where you'd like to add the creative.
2. Click the line item where you'd like to add the creative. You can also create a new line item if needed.
3. Click Add creatives.
4. Click User-defined template and select a desired creative template.
5. Fill creative template variables and click Save.