Limit record dups in a table

I have an object that I am querying a related field in the object.  If there are multiple related object then the main object is showing for each one on the related objects.  Which is correct.  How can I limit the table to just one of EACH of the main objects.  
https://drive.google.com/file/d/1gajzRF-qKFlnFdW-vmu3xsvqmVNd9EaN/view