Rotate Camera around player in 3rd person?

I already know the code for thirdperson, but how do I make it so that I can rotate the camera around the playermodel with the mouse?

Like at 0:38 seconds in here:

I know it’s one of the commands that start with “thirdperson_”, I don’t know which one, though.

thirdperson_mayamode

I think, if that fails do
find thirdperson
Read the results.