@aerouta yep it is now part of firmware so if your slicer labels objects you can issue commands to cancel them individually:
https://duet3d.dozuki.com/Wiki/M486
There is a lightweight plugin you can install if you only want a simple 2D view of the bed:
https://forum.duet3d.com/topic/24762/object-cancel-plugin-1-0
Or the 3D gcode visualisation plugin distributed with DWC supports object cancelation directly