Maybe you didn't set the option to click the mouse to change the page correctly when you created the powerpoint slide. Normally, clicking the mouse to change pages in a PPM slide was done by pressing the left mouse button. If you are using a right-handed mouse, you should place the left mouse button on the left side of the screen so that when you press the left button, you can pull the page to the left. It was also possible that the version of your PowerPoint presentation was old and needed to be updated to the latest version to solve the problem of changing pages with a click of the mouse. If there are still problems, I suggest you remake the PowerPoint or contact a professional for technical support.