This group in display conditions option allows access to content when viewed on a specific page on your website or any other custom URL.
This means it adds limitation on user views such that it becomes specific to a menu item or URL.
To set this go to the Display Conditions > Choose to Include/Exclude those conditions. In case of menu items choose the ones from which you would to include or exclude. In case of URLs add the custom page URL for which the content is restricted.
Irrespective of the match all the conditions values if any of these turns true it will be applied.