Change the pad sound individually in groove agent 5

Hi, In groove agent 5 I’m looking for change a pad sound, exemple. I have a kit I’m happy with, but only the kick bothers me, so I want to be able to assign another kick sound from another kit to this kit.
here I found a kick I like, but the drag and drop doesn’t work :

the best would be to replace the original kick, but here I tried to add it to a new pad, but it’s probably not the right thing to do?

Is it possible? if so, I don’t see how. any ideas?
Thanks !