The operation is very easy. You can place it freely as if placing a magnet on the whiteboard.
While playing basketball benchwork, I wanted to give players a fair chance and had difficulty changing members on one side of the whiteboard. At that time, I thought that it would be convenient if there was an application that was easy to use and could be saved / viewed.
The operation is simple and the result is simple.
Please take advantage of everyone's idea in various situations.