1, 4 people form a team, and the panels are almost the same, so according to the grid 1234, one person can be responsible for one material, saving time and effort.
2. Four people with different panel heights can distribute firepower as shown in the figure. Try not to crowd together to paint a material. You can also work in pairs, with the fire brush monster and the other person responsible for picking it up.
3, 3-person team, can be distributed according to the left, middle and right.