Another key word
"Employment opportunities" = important term
It's in section 57.4.1 in which sub sections a,b,c and d apply.
Employment opportunities means vacancies - not somebody else's job.
If you could bid for somebody else's job because you were more senior, that means that people would've been bumping other people way before this announcement was made last week.
This would make it continuously open slather and the company would be forever doing conversion/upgrade training...before the announcement was made.
57.4.1 is for vacancies.