There is a quick way to add a collision map that matches your 3D models.
- Import your object as obj.
- Select it and in viewport top bar next to Transform and View click Mesh.
- Here you can select a few variations depending on what you want with performance. Despite that if you choose Trimesh Static Body you will have a collision shape that matches your object.
Though it isn't as easy as a check box, it accomplishes the same thing.