If you want to block input to widget, you can try something like: place image to whole screen, set image to transparent (alpha 0) and visibility to “hit test visible” or something like that, and you can then switch between “hit test invisible” and “hit test visible” that image in widget blueprint…
Override: In widget blueprint, you have at left side “functions” and something in brackets like (“33 overridables”), hover mouse over this text, click and you will get dropdown menu…