Organic Groups - how to display a summary view of members of the group based on a "company" field added to the user profile
I took the default OG Members view and cloned it (keep the original) and changed from user: name to my field user:company - added aggregation - in advanced settings in the other section - then had to change the contextual filter to use the GID from the active node. then played around with the aggregation to get it to work ... overall it does what I needed.

Lesson learned ... use the views you get from adding modules - smart people built them ;-)