I hired 4 staff. Two work Monday to Thursday and two from Friday to Sunday. This is so that everyone has off days.
However, from Monday to Thursday, a message appears in the upcoming tasks that the staff working the weekend shift is not assigned to any business. And the same for the weekend shift.
I would expect that that message does not show for people on their off days. They are assigned shifts in the week. Maybe they need more hours, but that is a different problem.