slipper and diff adjustment

[B4 Sloth]

What is the best way to set the slipper and diff. I dont want to melt the diff after a meeting. The factory recommended setting on the diff seemed to have more resistace than i would have thought. I know the wheels should turn in opposite directions but how smoothly? The looser it goes the smoother the wheels turn,, but will this be too loose...? And as for the slipper, i guess thats trial and error?