You train your staff. They know what to do. But they still don't do it consistently.
This isn't a training problem. It's a systems problem.
The gap
There's a huge gap between knowing what to do and doing it consistently under pressure. Training closes the knowledge gap. But it doesn't close the execution gap.
When someone's in a rush, stressed, or tired, they fall back on habits. If the system doesn't support the right behavior, they won't do it.
What actually works
You need three things: Clear procedures. Easy access to those procedures. And feedback when things go wrong.
When all three are in place, behavior changes naturally. Not because people are trying harder, but because the system makes the right thing the easy thing.