Legatos in Dorico Elements

I am using Dorico Elements, which does not include Library Manager (only in the Pro version). I cannot get the Spitfire Solo strings Legato articulations to work, perhaps because they are not shown in the Playback Techniques? The files provided from Art Director appear to include Playback Templates, which would add to Techniques, but I cannot load those into Play>Playback Templates since they have the .lib extension not the expected .pt. Is there a way to get the Legatos to play without buying Dorico Pro?