How do you implement a Blueprint Interface in a UMG Widget?

As the title states, I am trying to implement a blueprint interface into a umg widget, but I can’t find the option to add an interface. I need this to work around the lack of blueprint widget inheritance or ability to add children to custom widgets in UMG. Any help is much appreciated.

Go to the graph section of your UMG widget, and go to the Class Settings via the button at the top. In details pane you can add or remove interfaces in the Interfaces section. As a side note, you can also have UMG widgets inherit from other widgets by going to the graph tab of the intended child widget and going to File->Reparent blueprint and selecting your parent widget.

Hope this helps!