I've RO'd several NRL Hunter matches, here's how a typical skills shooter stage goes:
"Hey man, how's your day going?"
Shooter: "It's been fun, challenging though!"
<I look at their handwritten scorecard, see that the shooter has not been hitting that many targets>
"So I see you're a skills shooter, how much help do you want me to give you?"
Shooter: "I want to give it a try on my own, you can help if things start to go bad"
<smiles and nod, knowing that I'm going to help them a bit sooner so they don't crash and burn>
"Sure thing, we'll get you some hits. Reminder this stage is two Bear targets, left to right, two positions will be two blue dots on the rocks.
Time starts now!"
<shooter takes slightly longer than average to get on glass and start searching>
"You might want to search more on the left side of that far hill"
<clock ticking>
"See that open patch of grass? Look at the left edge of it."
<Shooter finds targets, starts to get into position>
"Give yourself a tiny bit more bipod height so you can see over that rock and grass in front of you. Now move a tiny bit right so you can see the target."
<Bang!>
"Re-engage! That miss was just off the right, hold to the left side of the bear"
<Bang!>
"Impact! Next Target!"
<Bang!>
"Impact! Next Position!"
<Beeeeep!>
"And TIME! Unload and show clear!
Great shooting man, nice work! I've got you for a 3. "
<Help them gather their gear and clear the stage area for the next shooter>
Basically it's all at the RO's discretion, but usually ROs are experienced shooters and know what it takes to help a person have fun. The biggest hurdle is a shooter running out of time, so anything I can do to help a shooter find the targets and then get into position and start shooting is the goal. The last thing anyone wants is for people to time out and not get any shots off. The main challenge is that it can be time consuming to find/range targets, switch to the rifle, build a position, and then re-find targets in the scope so a lot of people burn time and don't get all their shots off no matter how much help is given.