[Mufti]

I suspect they are asking you to do the "simple" thing first in order to get arms and shoulders correctly positioned first and then progress onto (seemingly) more difficult things later?

Top finger in corner of your mouth and point the tip of the arrow at the gold?
That is a standard "have-a-go" method for sefety and ease of shot - also gives you a feel for just another form of shooting later on perhaps.

Don't loose sleep over it, by the end of your course you will be shooting like a trooper if you are as keen as you appear in forums. All trainers/coaches have their own spin on how and when to teach things.