Before the company made the "special job" announcement, it occurred to them to use the serum on some of their less hard-working employees.
The company then proceeded to investigate which employees would be suitable for the test.
And after a bit of research, they managed to find the right employees.
Those employees are: Amanda Moore, Vanessa Winters, Maxine Wright and Susan Bell.
So these employees were immediately informed that the company was offering them a new job, where they would no longer have to work much and would also receive good pay.
Although in reality, that new work was about the special serum although they still don't know it.
This with the purpose of putting those four girls to good use once and for all by putting them in a job where they can really be of great help.
Finally....