I'm running Win10 latest update. I can zoom my entire screen in and out by holding the CTRL key and using the mouse scroll wheel to zoom in and out. I frequently use this to make things easier to read. I don't know what this feature is part of. Probably the Windows OS. The feature works fine in most if not all of the software I use on my PC with one exception. I have a program called Family Tree Maker. The zoom feature does not work on the screens in this program. How can I make the zoom feature work for this program?