Be sure you have PyGame installed, otherwise install it via pip install pygame
Also, install ezgame via pip install ezgame. This command should also install point2d.
These are all the dependencies needed. Please notice they use Python3.
Edit application.py adding modes and loops accordingly. Each new mode should have an initialization added on the Application.init() method and a loop method created with in the format <mode>_loop.
To move the arm, use a controller class. See incrementer.py to get an idea of how to do it.