A Simple Start with Management by Exception
When I used to be a manager myself, if any of my subordinates came with a question, I asked them what was their proposal and if they had one, then we could discuss it.
If it was a good idea they were told to go ahead.
If they did not have a proposal they were asked to come back with one; again, I followed the same route.
Eventually they learned to take responsibilities themselves and reduced my amount of work to resolve major issues.
This was the way I followed to initiate a management by exception practice in real terms.