Note octave query

I input the top line here, forced durations then input the lower line.
Every single F appeared on the top line.
Firstly, Dorico should default to the octave of the note I’ve just input.
Secondly, the low F is nearer both parts anyway.

Any ideas?
Quiet 2.jpeg

When you’re in chord mode, Dorico always builds the chords bottom up.

Ah, that explains what’s happening.
Is there any chance that this could be a preference between bottom up and ‘nearest last input’?
Is there a shortcut to input lower?

Yes, you can type Ctrl+Alt+F (Windows) or Control-F (Mac) to input the F below.

Marvellous! I’d missed that somehow. Thank you!