I made a small tuning mod which overrides the interaction when you hire staff for marketstalls & chef stations you can put on lots, barista & bartender because i was really annoyed that i had to call and pay staff.
I changed the Staff Costs from 100$ to 0 $ and deleted the part where the Sims Phone Call Animation was coded.
You still have to click on the marketstall & co and choose hire staff but there will be no Phone Call Animation anymore and you don’t have to pay for them. (Make sure to have a clear queue)
It may be necessery to replace the marketstall if you revisit a lot and the marketstall is still open but without staff.