Where can we find the parameter referred to by Top Workers Location in campaign audience breakdown?

Summary:

Hello all :)

HCM Communicate > Campaign > Audience > Audience Breakdown > Top Workers Location

Do you main know to which parameters refers "Top Workers Location" that we can expand metrics in the Audience Breakdown of Campaign?

Thank you!

Content (required):

Version (include the version you are using, if applicable):

Code Snippet (add any code snippets that support your topic, if applicable):