Adding multiple shortcut options for one action

Sorry if someone already asked the same thing, 

There is a field to enter customized shortcuts to a specific action (like Ctrl+K to show preview screen etc.) under Options,

but it seemed it is not possible to set multiple set of key comibinations (like Ctrl+ K and Ctrl+ P both trigger preview)

because once you enter a specific key combination pair, the option to enter further shortcuts by comma separate is disabled.

If you try to write "Ctrl+ K, Ctrl+ P" in notepad and then try to paste it to the field, you only get Ctrl+V entered in option field.

I see at least it is possible to allocate multiple key action pair to one edit action because pre-defined ones sometimes have two option for one action - how is it possible to customize? The version is 2022 but it seemed this is the same for all versions, 

thanks for your kind help in advance!

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