@p0rr1dg3 I have an Ooznest Workbee CNC. It is configured with soft limits which prevent the machine from moving outside the machine limits.
What version of Duet Web Control are you using?
In CNC mode, we have machine coordinates (the actual physical limits of the CNC) and work coordinates, which are job specific.
When you set your X0 Y0 and Z0 they fall within the machine coordinates and you will get an error notification when the machine is given a command to move out of bounds.
Your work coordinates CANNOT exceed your machine coordinates limits.
Edit
I see you're using very old firmware. Please upgrade to the latest stable firmware and your issues will be solved.