When I used to lead the FS groups , it was always difficult if people had “plans to work together “, especially if Sis. Fruitful had brought along all her kids…
I did have one Bro. that people did not like working with. I used to get phone calls after the Service with people saying “please don’t put me with him again “ . He was an awkward so and so who said and did his own thing so perhaps they argued? He was o k with me though.
I was more relaxed about men and women working together. I tried to treat people as grown ups.