How to arrange the lighting in the studio?

This is not easy to answer, because I don't know, dear, what style to shoot. If you want to cut the picture, the color and white background of the umbrella will do. Daylighting, because the umbrella itself is reflective.

Material, you can't use direct light, soft mask, adjust the distance, the distance will affect the intensity of light, another lamp, shining on the shading board, uses the reflection angle to add light to the umbrella, because the black flag absorbs light, so soft light is not needed! The bus is not convenient for painting, either? I'll make a simple diagram for you. Look, there are too many ways to distribute light, and this is just one of them!