how to combine animation clip with animation controller


I tried to google but I am always getting tutorials how to add animation clips to controller rather how to combine them in assets pane. If you add button from UI, then turn it into animation and generate clips for all four states, Unity will create animation controller with four clips as single icon in assets pane with ability to expend it and see all clips. I would like to do the same with my own controller and clips (to keep project clean). How can I do that?

Thanks in advance


It was actually hard to find. Needed using “nest” instead of “combine”.