Links are on the list in the middle Press 1 for TSC and Green link Press 2 for Blue and Yellow link Press 3 for Red and Purple link Triple click the link and press Ctrl + C to copy it and Ctrl + V to paste the link somewhere else, then steal your friend without their permission and play the game with them!
Thanks @Snotty693 for the stick vectors, I don't know how you can make stick figures so awesome and cool, like no glaze but I couldn't make something that easy with the Scratch interface.