✅ You can save the settings as a Policy to apply the same configurations to the different M2E OTTO Listings or override the Listing settings for individual Items.
Images #

Main Image – select the source for the image that your potential buyers will see on OTTO.
Gallery Images – choose whether you want to add small thumbnails that appear under the Main Image. You can add up to 8 additional images to each Listing on OTTO.
ℹ️ It is possible to set Text, Multiple Select or Dropdown type of Magento Attribute as the source for Images.
The value of the Attribute must contain absolute URLs. In the Text type Attribute, URLs must be separated with a comma, e.g., http://mymagentostore.com/images/baseimage1.jpg, http://mymagentostore.com/images/baseimage2.jpg
Description #

Title – select the source for the product title. You can use either a Magento Product Name or a Custom Value with the insertion of the Magento Attributes.
Description – select the source for the product description. You can use Magento Product Description or Product Short Description. Or, if you would like to customize the description, use a Custom Value with the insertion of the Magento Attributes or Image tags.