You can show system objects above different instrument families in each layout independently. Multiple items are categorized as system objects, including system-attached text, rehearsal marks, tempo marks, repeat markers, and repeat endings.
Procedure
Result
System objects appear above the top staff in each bracketed group you select, provided a bracketed group for that instrument family is included in the selected layouts. If you activated options for Also show below bottom staff, the corresponding notations additionally appear below the bottom staff.
System objects are only shown above instrument families that are bracketed or braced together. You can change bracket grouping in each layout independently. You can also bracket or brace specific staves together using custom bracket/brace grouping.