Step 1: Select the '2D' drop-down menu > Select '2D Pocket'.
This will open a new 2D pocket menu.
Step 2: Inside the pocket window:
Step 3: Inside the tool selection window:
Step 4: Inside the pocket window:
Select the 'Select Z Axis/Plane & Y Axis' option.
You will notice that the Z Axis cursor icon is now select prompting you to select the Z Axis...
Step 5: Inside the 'Tool Orientation' drop down window:
Select the tool orientation to match the stock setup:
Select the 'Box Point' cursor icon and select the corner shown - The corner should be the bottom left corner on the top face.
Please note that when you complete this stage successfully the Z axis should be pointing up towards the sky...
Step 6: Inside the 2D Pocket window:
This will ensure that the tool cuts only 1mm depth cuts at a time.
Step 7: Go back to the geometry tab (2nd tab)
Select any pockets.
This may include any windows or wheel arches.
Press 'OK' (in the pocket window) to complete the selection.