padstack question

hello:

is there a way to merge a L1-to-L2 padstack and a L2-to-L3 padstack with one L1-to-L3 padstack on the layout?

assuming that the L1-to-L2 padstack and the L2-to-L3 padstack are already placed at the same location on the layout.

is there a way to find the locations where the 2 padstacks (L1-to-L2 padstack and L2-to-L3 padstack) are placed at the same location?

in addition, is there a way to split a L1-to-L3 padstack into two padstacks, a L1-to-L2 padstack and a L2-to-L3 padstack on the layout?