The configuration tool hasn't been released officially yet, because we know it still needs work and the author has been unable to work on it for a couple of weeks or so. However there is a thread about it in the Duet WiFi forum here [www.duet3d.com].
Large delta printer [miscsolutions.wordpress.com], E3D tool changer, Robotdigg SCARA printer, Crane Quad and Ormerod
Disclosure: I design Duet electronics and work on RepRapFirmware, [duet3d.com].