Tempos at top and bottom?

I can see how to get Rehearsal Marks system objects to show at both top and bottom of the full score but I would also like the Tempo markings at both top and bottom too.

How can I do that?

At the moment there’s no option to show tempo items below the bottom staff, I’m afraid.

You can use MusGlyphs as shift X text on the lowest stave; press f to Flip below the bottom staff, and adjust the position in Engrave mode.