How can Two Person Plaster to Wall Fastly

Yesterday, I am appointed two experts who know the plastering. They have contracted with me. This contract of Rs. 1250 after adjustment in price. Within few hours they have completed his contract. I have learned lots of thing. One of great knowledge, I gained as the lover of knowledge is that they are doing plastering work fastly. For this, one is just sending the mixture of plastering on the wall and second is plan it with his equipment. Watch this video and gain this great knowledge of building.