In the first congo I was in, there was a sister who was quite a brain with numbers, in fact, she was a CPA. She handled the congo finances for years since there was a dearth of elders and ministerial servants, and it was a small congregation.
Finally, when it grew, they took the job away from her although she'd been doing it quite well, and gave it to an inept brother who proceeded to totally screw it up, of course.
But, because he had outdoor plumbing, it was deemed that he should handle it...badly.
That sister is no longer a Witness, by the way. She left the Witnesses years ago, (YAY!) left her janitor husband who was an alcoholic dope and eventually married another CPA she had been working with, and they have their own very successful business, last I heard. Of course, the Witnesses painted her a harlot and a terrible person, an "unsubmissive" wife who drove her poor husband to drink and was frigid....all sorts of awful things.
She was never submissive enough to be a Witness because she was a SMART person. I remember her being very unhappy as a Witness, never smiling and obviously struggling to stay married to her husband, who was also a pretty obvious alcoholic. On Hall cleaning days every weekend, he always smelled of beer and sometimes was definitely drunk.