It depends....
It depends if the yoke is equipped with an air bag or not.
If no (older 737s), the left hand at the 10 o'clock, the right hand at the
2 o'clock.
If yes (newer and updated older versions), the left hand at the 8 o'clock,
and the right hand at the four o'clock.
Your maintenance engineer will be able to tell you if you have an air bag
or not.
Fly safe,
PantLoad