Also, How can you make a Courtyard that allows parts to be placed underneath the shield. I created a courtyard shape that matched this F.Cu layer, but in the layout tool placing anything within the shield created errors
Open footprint editor.
Use tools to create a graphic shape (or import a shape) on the top or bottom layer.
Place a small SMD pad on that graphic shape.
Right mouse click on the pad (or hotkey Ctrl + E )
Select “Edit Pad as Graphic Shape”
Finish with another Ctrl + E.