How do i remove all these anonymouse users from this userlist? i imagine within the reference selector it would need to be an x path? to filter it out? but what options would i choose? and what information would i put within it? or are there other work arounds?
You could indeed add an XPath constraint to your reference selector.
Open your reference selector and go to the 'Selectable objects' tab, select 'XPath' and add the following XPath constraint:
This should filter out all the Anonymous users for you.