the engine is only moved from the crank bolt.
but its critical to ensure the engine is stopped at the correct timing to check and adjust valve lash - if its stopped at the wrong timing because mechanic was looking at the cam lobe from a skewed angle - the clearances wont be correct.
the calculation is very simple. - its a 4 stroke engine meaning 720 degrees of crank is one complete power cycle of engine. Its a 4 cyl so divide 720/4 and you get 180 degrees.
your firing order is 1342
meaning TDC mark on crank is used to set cyl1 - (verify engine is at compression stroke and not exhaust).
now rotate crank exactly 180 degrees forwards and set cyl 3
then another 180 degrees (again TDC mark) and set cyl4
rotate another 180 degrees and set cyl 2
job done!
p.s. if you are going to use the camshaft pulley to see the timing then split it into 90 degree intervals as the cam spins at half rpm of engine crankshaft (180/2 = 90)