That’s really stretching the m idea behind this tentent of lean manufacturing. The idea is that the whole management team should somewhat regularly visit the workshop - the place where work is actually done - so as to stay in contact with what’s happening there and are aware of what’s happening with the process and the team.

If you are a direct manager of a technical team, that point should already be covered. You are always in contact with the working team. You are already in contact with the people knee deep in the work: that’s your the tech leads, the junior and senior engineers and the WPM working for you. Just ask them what’s happening and where process needs work. If you can’t trust your team, well, you have bigger issue than the quality of the code.