When you're setting your adsets for your Facebook campaigns, you can either decide to select your placements manually and choose to trust the Automatic placement feature available to let your ads deliver on the best placements at the lowest cost.
To help you track your campaigns and see their placements easily, we've added a new breakdown Placement (all) in the Audience breakdowns:
You can find it in the breakdowns available in your campaign reports or Columns or Grouping in the widgets:
Want to know more about Automatic placements on Facebook network? You can find more here!