This image should be approximately 440x250px although it will be flexibly scaled & cropped to fit the user interface in different scenarios as required, so actual dimensions for display will differ.
Add some tags to better categorise your content. You can assign a value to a tag for more in-depth organisation. View existing tags.
Assign a page template that will be used as the default content for all pages created within this item. Keep in mind this will only be used if the page creator has view access to the chosen template page.