What you see is one of the more irritating design details found in many starter solutions. The magnifying glass is a graphic object stacked on top of a button. In the case of the portals on the left hand side, the buttons are invisible rectangles.
This is irritating because the easy way to open button set up to check and see what script is performed by the button is to double click the button while in layout mode, But because this graphic object--which I would make part of the button, is sitting on top of the button object, you don't get button setup to appear unless you carefully double click the narrow space between the edge of the graphic object and the invisible button located behind it.
Thanks for the response. It took a couple of attempts to find the button and to make it work.