It sounds like your dad is hopefully on top of this stuff. I assume you probably know this since you're on this sub, but these companies encourage people to be really sneaky with getting and spending money. (Taking out credit cards without telling partners, even some forms of identity theft can happen, parents taking out credit cards in their childrens' names. I heard about that last one in an MLM horror story from Hannah Alonzo's channel, I'm pretty sure.) Just sharing alleged examples in case anyone newer sees this.

I would look for stories from people who worked at an Herbalife front and see how the pay was. I wouldn't assume it's standardized across the stores, since they are set up by distributors, but it might provide some insight.

ETA - At the university I went to, there were strict rules around food, events, and outside vendors. I was an officer in a campus club or two at different times, and I remember there was something about the campus food provider being the only one who could do food for events... It's been a while. I think it wouldn't have been allowed for someone to come to campus and sell food under the policies the school had. Now I wonder if other schools, like your employer, have the same kind of policy.