Add component to "Root" created from UMADynamicAvatar

Hello, i am new to unity and c#

For those who wokrs with UMA, you know about the Root game object created at runtime which renders the UMA on screen, what i need to do is to add my script UiWidget.cs as a component to any Root game object created from UMADynamicAvatar.

What solution do you suggest ?

Thanks :)