You can simply add the sticky ad in the targeting section.
For Example: To add sticky ads just follow the below simple steps.
Step 1: After adding the Data Client ID and Data Slot ID just go to the Targetting section please check the below reference Screenshot.
Step 2: In Targetting section you just need to select Sticky ad from the dropdown of Where Will The AD Appear, for the reference please check the below reference screenshot.
If it is not working or facing any issues please contact our technical team