Currently we can create Lead Source Groupings based on Source Descriptions, but not based on Source Details. For example, our Subaru stores have leads labeled Subaru Dealer Site (Source Description), but some of these have Digital Retailing as the Source Details. We should be able to group these properly as Digital Retail leads and override the label of Subaru Dealer Site, but cannot do so as Source Details are not selectable in the Lead Source Groupings tool.