You can lengthen/shorten custom brackets/braces vertically to change the staves across which they span; for example, if you added a new player below a bracket group and want to extend the bracket to that staff.
Prerequisite
Graphic Editing is selected in the Engrave toolbox.
Procedure
Result
The selected brackets/braces are lengthened/shortened to staves above/below. This affects the staves included in the brackets/braces on all systems to which the corresponding bracket and barline changes apply.
Only one bracket/brace can exist on each staff, they cannot overlap. If any part of a selected bracket/brace collides with another bracket/brace when it is lengthened/shortened, the other bracket/brace is shortened to accommodate this.
You can undo this action, but the previous length of any shortened brackets/braces is only restored if you lengthened/shortened brackets/braces using the keyboard.