mp-f ?

When I hold shift+D, is there a way I can type in a “mp-f” and get the desired notation?

Could you include a picture so that we understand what is that desired notation? I think Dorico should output something nice, hence my request

If you want Dorico to display “mp-f” you have to input “mpf” into the shift-d-popover. The “-” will be added automatically.