I have only been playing the game for about 10 minutes, and I know most of the controls, but there are some controls that I don't know, like how to call your worker bot to you. (I've watched MattShea play some of the game)
From what I know a worker bot comes running to you when you have selected it and pressed the record button. Then it runs to you to "learn" the actions that you want it to perform. I don't know of any other button that let's a bot run to you.