What training steps do astronauts need for the astronaut extravehicular trainer in Gemini spacecraft?

There is a topic of extravehicular activity in the launching mission of Gemini spacecraft, so the requirements for extravehicular procedures and activities are strict in ground training. Extravehicular training includes the training of equipment activities: astronauts take out umbilical cords, backpacks and all extravehicular supplies from the repository according to procedures. Umbilical cord is a continuous belt formed by the connection of spacecraft main body and astronauts' various pipeline systems. When a single life support system can't work independently, the oxygen, pressure and energy systems needed by the human body must be supplied by the spacecraft mother body. When picking up the umbilical cord, the two trained astronauts must carefully check each other's life support system joints, and repeatedly train this kind of action and the procedure of human disembarkation, that is, first send their feet out of the cabin, then stick their heads out, etc ... These preparatory activities are carried out in the static Gemini spacecraft simulator.