How to display unrealted entities in a sub grid

Hi can someone please help me out in this complicated situation as i am new to this .

i have set up a sub grid of Associated Industry on my Account form as shown below. Now i want to display the same same sub grid for Contacts which are related to this Account. but this isnt working and i am geeting an empty sub grid on Contact.

I want to display the Industry and Sector sub grid on the Contact of this Account. i dont know coding so someone can please provide me with OOB Approach ?

Any help will be really appreciated.

Thanks in advance.