Thank you for your reply, I does not exactly solve my problem, but I might not have been perfectly clear in my initial question.  See my reply to Jennifer. 

Thank you for your quick response, I might not have been perfectly clear in explaining my issue initially.  I'd like to provide additional detail on the specific exclusion I'm aiming to achieve in relation to the Unique Visitors metric.The segment's purpose is to count Unique Visitors who interact w...

Hi Adobe Community, I'm currently developing a segment to understand the number of unique visitors that are in touch with certain areas of our site.  The segment is structured to include hits on any pages that begin with 'A.com/A' or 'A.com/B', using two HIT containers in Adobe Analytics. One HIT co...