It's a coincidence that this just happened on our mailing list, but anyway. There's a new moderator involved, a few weeks. He was instructed about how to accept held messages, and to unmoderate members. It seemed like things were going fine.
And then, we just discover, members are continuing to be moderated.
What happened?
His answer: "the user is set to 'list default'. Isn't that right??" No. It should be 'default processing'.
Notice the reasoning. he just thinks "default", and that's all, which is a mistake.
There isn't a mnemonic device where the settings have different names.
But it brings up another idea also. When accepting a held moderated message, could there be an option, which is enabled by default, so it just works, that is "and switch this user from moderation-action1 to moderation-action2. That is, from 'list default' to 'default processing', at the same moment as accepting a message, and even without further mouse clicks. Then there would need to be an option, which is clickable, when accepting a message, "keep this member in moderation".