KeyNavigation Priority

[RG90]

HI,
I am working on keyNavigation for my screens, I want to assign keyNavigation priority to other item by breaking GridView wrap flow. I know how to do it when we have items in one qml file. But, I am facing a problem to assign keyNavigation to other item(Titlebar) that is in other qml file. I don't have any idea how can we call an item in other qml to the one that we want. Is their is any procedure so that we can identify it an assign keyNavigation to it, do we need to use any loader thing.

Thanks.