Guide

1. Go to Setup on the top right.

2. Search for Object Manager (or search for it in the Quick Find.)

3. Pick the parent object (e.g., Accounts).

4. Click Page Layouts

5. Choose the layout (e.g., Account Layout).

6. Select Related List.

7. Drag the desired related list (e.g., Contacts) to the Related Lists section.

8. Drag the component and drop it in the Related Lists.

9. Click Save.