How to assign shortcut to Auto Size function of the sequencer?

I’m working on a sequencer and I use the Auto Size feature a lot. Since the function is in nested categories, it gets a lot of clicks, so I wanted to assign a shortcut to it and use it.


But in the Sequencer tab of the shortcut editor, I couldn’t find Auto Size among the functions that start with auto.


Can’t assign shortcut to Auto Size function? If possible, please let me know how. And if not, teach me about possible or impossible rules for shortcut assignments of Unreal Engine.