Fixing tempo duration mistake

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I mistakenly type quarter = 120 instead of eight note.
I see in properties how to change the speed but the duration item is not selectable.
I’m sure it’s simple but so far I can’t see how to correct that.

I may be misunderstanding the problem, but when I created the wrong tempo/metronome mark, I just selected the bar again, and re-input the correct one; not editing, but just replacing. Or, maybe it’s a different problem?

I think you have to delete it and re-write it correctly in the popover.

You can’t change the note value (e.g. from quarter to eighth) in the Properties panel at present.

That’s a relief Daniel. For once I wasn’t missing something obvious.