How to use single handle shower

Hi,
I have a rookie question for this forum .

We just moved into a property that has a Delta faucet in the master tub. We have not been able to figure out how to use the shower. The tub spout works fine when I turn the knob and we can control the temperature of the water by turning the knob.

I can not figure out a way of sending water to the shower. I have tried to pull/push the knob and twist it in every possible direction.


The knob for the faucer is similar to this one. It is a Delta brand and I dont know any more details about it.


http://www.lowes.com/pd_139577-1366-89277_4294821483_4294937087?productId=3130615

Is there something very obvious that I am missing.

Thanks

You turn the water on and then pull DOWN on the ring around where the water is coming out of the spout.

If your spout looks like this:


pull down on the ring at the nose.

Thanks.

Thanks for the replies. This works fine forme. I should have seen it eariler