Here is a split corner cabinet which is made up of 2 cabinets.
One strategy is to have 1 door hinged on each cabinet using a Width adjustment.
This is looking at the 2 cabinets pulled apart. The cabinet on the left is a straight forward standard cabinet with 1 door hinged left and a width adjustment of -623 mm
The cabinet on the right is a half cabinet with full back, full top and the left side is ommited. In this case there is a single door right hand hinged with a small width adjustment of -39 mm which takes care of the missing left side and the thickness of the door.
In this example we have 2 cabinets both with 0 doors and a third return cabinet that has 0 depth.