You can use the Set Camera To Follow if you dont understand the math behind it.
Otherwise, I know of 3 ways.
1) Use a limb, and position the camera there (I dont like this method)
2) This will keep the camera at the same distance from the player, but will be smooth:
ca# = curveangle( object angle y(1), ca#, 20.0)
cx# = object position x(1) - (sin(ca#) * 600)
cy# = object position y(1) + 300
cz# = object position z(1) - (cos(ca#) * 600)
position camera cx#, cy#, cz#
point camera object position x(1), object position y(1), object position z(1)
3) This will be smooth, and as the player moves, the camera will "chase" the player:
cx1# = object position x(1) - (sin(object angle y(1)) * 300)
cy1# = object position y(1) + 200
cz1# = object position z(1) - (cos(object angle y(1)) * 300)
cx# = curvevalue(cx1#, cx#, 10.0)
cy# = curvevalue(cy1#, cy#, 10.0)
cz# = curvevalue(cz1#, cz#, 10.0)
position camera cx#, cy#, cz#
point camera object position x(1), object position y(1), object position z(1)
Didn't test these, but they should work.