Hello, and thanks for participating in the forums!
With this particular sentence, we can see how it might seem to contradict the explanation in the Caution, but this is actually more of a grey area.
While it’s certainly true that the person is ‘starting’ a new position, the larger context would be that they were presumably working in another division before, so this is actually describing a change in position rather than the start of something completely new. (To use the wording in the writeup, whatever their previous position was is a ‘significant’ event in this context.)
We understand it’s a bit tricky, but does this interpretation help to clarify it at all? If you have any lingering questions, feel free to follow up and we’ll do our best to explain further!
P.S. to you and everyone – I’m new to the team and while I’ve been active behind the scenes for a few months now, this is actually my first official(?) forum post. Anyhow, you’ll probably be seeing me around here more in the days to come, so よろしくお願いいたします!