when i want to override a frontend module , it is so easy, if there is a module that i dont know where it comes from , i can simply enable template hint , but my problem is when i want to change or adding something in admin panel , there’s not template hint , and i cant know where anything is coming from and sometimes it is a xml file not phtml like the frontend , how can i know them
for example i need to add a new input in table rates section but i dont know where is displaying form 