Re: "strange" score
Reply #1 –
It should mostly be possible, but it'd take a lot of messing about, and the short staff won't be cue sized.
Add an additional staff, fill it with rests and collapse it until you need it. When you forbid the collapse It will show for a full width of the page, but you can use "digital whiteout" to "disappear" the extremities that you don't need.
The dotted minim can be chorded with a minim rest that is made invisible (don't show rest in restchord properties) OR just use a minim and place the dot using a text entry.
The dashed barlines can probably be done with a user object... Maybe RickG's Markup or Markup Page objects (there is discussion of these in the User Objects section of the forum).