Offers are what you are promoting to your audience.
Steps to create a new offer:
Step 1: Click the Offers in the Elements dropdown menu.
Step 2: Click the Create New Offer button.
Step 3: Fill in the necessary information, especially the offer URL and click Save. To understand the tokens/parameters in the offer URL, please click here.
If you are not familiar with the tokens in the offer URL, please check here for more information.