Q: Sometimes in Sibelius the bottom staff on a part page is too low; where there are ledger lines, the dynamics or a low pitch go below the page margins. I have tried the obvious reset above and below and dragging and optimize. When I drag the bottom stave it won’t budge, it just affects the stave above it. What is the solution?
A: You can use Option-Shift-Up Arrow (presumably Alt-Shift-Up Arrow on PC) with the staff selected to move it up and then reset space above staff to reset the distances of the staves above.
You can also create a Special Page Break at the end of the previous page and create a new margin definition for the bottom margin for one page only. Select the last barline on previous page and type CMND-SHIFT-P (presumably CNTRL-SHIFT-P on PC):
That’s all there is to it.