Hi out there,
after doing many scans from different directions and passing them over to Shapefusion you might end in a messy bunch of results which have to be sorted in Shapefusion. You might have lost your overview which one should be aligned to an otherr result? Don't worry, let DAVID do the job.
To make DAVID search for the best align target simply group all meshes but the one you search a target for:
Using the Free align tool, DAVID aligns the mesh to the best fitting member of the group: