Use the Staff tool to edit staff-specific characteristics using the Staff Attributes dialog box. For example, you can show or hide certain musical elements in the staff such as measure numbers, expression markings, time signatures and so on. (To apply staff styles to portions of a staff, use Staff Styles).
Noteman says: Apply changes to instrument staves, such as the staff name, transposition, and starting clef in the Score Manager.
You can also edit and create groups of staves; use the Group Attributes dialog box to define groups of instruments in the score and for part extraction, add a bracket to a group and specify how the barline appears on the grouped staves. An individual staff can belong to any number of groups.
When you click the Staff tool, a Staff menu appears that contains many commands for working with staves and groups of staves, such as applying customized staff attributes, adding and changing staff groups, hiding empty staves, and so on.
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