Well...Sometimes we don't
We were doing good to get the safety dealie and identify what "downrange" meant. The Manly Men were the toughest, the gals were great ( they hated the PG, at least listened , knew safety, MOA).
Understand the Armored Car folks have to shoot through ports. So using light light target loads we dealt with MOA. I used what I call a "push - pull" method. Think of a Weaver type stance with a shotgun crossed with...
Well you know when you from low gun, and in the process of mounting , that spot right before the buttstock is raised enough to start sliding into shoulder pocket. For a right handed shooter, left foot more forward, knee cracked, elbows " rigid but flexible' with the left elbow ~ 45* to ground.
Difficult to explain, the shotgun is close enough to body to control, far enough to use eye/hand coordination. "Roll" with but still in "control" of firearm.
I used the BB gun ( Brister method again) to re -aqaint the re quals, and start off the new folks with the form. Sometimes ( especially ladies) I used a .410 and doubled up on ear protection. Once the light bulb clicked on, and it did not take that long for the ladies, they seemed to have a "knack" for it. Men have preconcieved ideas and is hard to break them, video games and Hollyweird movies.
I then had some "ports" to shoot through. Sheetrock cut outs, and started with the BB gun, .410 then the light loads in the 12 ga.
At one time we had a 870 without a firing pin on purpose and a slew of Dummy rounds. Let them practice loading, cycling, and dryfire the gun. I think every Dept should have a dedicated dummy gun and dummy rds. Old Beater gun with Orange paint, but one of the best tools I can think of.
Many ladies bought a BB Gun and continued the practice on their own. Many dispelled fears of shotguns and learned to shoot quite well with full stocked guns.
MY method may not be "correct" like Dave and others train folks. I decided to start basic, go slow and instill a simple method that would allow one to practice safely on their own. Perhaps to get the interest and dedication up and make it fun. Their "job" can be a hassle , thankless and depressing one. Many folks never practice until time for the next re- qual ( sadly). Seems to be a lot of turnover as well.
Me - being me, I wanted to give something in a way that perhaps would allow them to take a more active interest in personal safety for themselves even if they left the job. Many woman did, I feel better about that.
I know - I have some weird ideas and perspectives on things.