You can create ProcessIcons with any process (tool) that you have. Just drag and drop the blue triangle at any process window to the workspace. Then, you may rename the process, to display a useful reference to the task you are performing. In this case, these icons represent PixelMath and CurvesTransform (you can tell by the icon figure). So, you just have to copy the equations (in PixelMath) and the control points (in CurvesTransform). I have not seeing the video, but I think that somewhere they double-click on them to open the respective process window, and show you the parameters.