For current customer we use Lightning only. I have a requirement to put a button to a related list that would have to redirect to Lightning Component. I know that it is possible to redirect to Visualforce page in this way – Create custom button on related object and add that button to related list in page layout editor.
But how to do it with Lightning Component?
P.S. there is Lightning Record Page and Related Lists as single component are dragged over page layout to define their position (they take 2/3 of width).
After some research I found that it is not possible. Quick actions that open lightning components can be placed on top of page only.