UMG- How to disable mulit-touch on widgets?

I hope everyone is doing well.

I have a umg menu and I have tick boxes that are mutually exclusive. I have it so that when you click one checkbox, the other one disables. This works great, but one of testers pointed out that he could touch both at the same time on a touchscreen and glitch my menu in a way that they are both disabled.

Can anyone think of a way for me to prevent this from happening? Is there an option to make only one widget focusable at a time? Disable multi-touch basically?

Thanks for your time.