XF 1.5 Hide guests and robots from the members online list

is there a way to hide the listing of guests and robots from the who's online list for members? My members really only want to see who is online in terms of their friends. Or, if it has to be that everyone can't view the guests and robots, that's fine too. Is there a way to do it?
no that is not what I am looking for. I want my members to only see the names of others members when they look at the who is online. I do not want them to see robots or guests listed as 'who is online'.