Go into your helper objects menu and create a grid object, link it to your camera. Then activate the grid and draw on it.
Its easier to set it up perpendicular to the camera if you are starting with a clean scene, but you could use the Align tool to align the grid to the camera.
Anything you draw on the grid will have to be linked to the grid if you want the grid and the object to follow the camera.
There are probably other ways to do this but this should work.
3ds Dos 4 through Max 2016
Windows 7 Home Premium x 64
Intel i7 CPU 960@3.20GHz, 12GB RAM, DX 11
nVidia GTX 760