Keyboard shortcut "To next/previous heading"

In LibreOffice Writer Navigator I can choose Navigation → Headings, and switch between headings of all levels with the next/previous buttons, but I can’t find the “To Next/Previous Heading” in the list of available functions in Tools->Customize->Keyboard. How can I assign a “To Next/Previous Heading” keyboard shortcut?

you cannot assign that shortcut. But you can fill enhancement in bugzilla about it