Two Handle Moen shower diverter, what position must it be for the water to go up to the shower head

If this is just a 2 handle shower valve just turning it on should send water to the shower head if it is piped correctly. If it is a tub and shower valve, diverter should be on spout If you could post a picture or model number would be helpful.

Two Handle Moen shower diverter, what position must it be for the water to go up to the shower head Puff is bang on. If your valve is a two knob valve then you have a spout diverter, (see image) and you pull the diverter knob up to divert from tub to shower.
Regards, Tom