If you have made settings for a Grand Staff, you can copy these to all following Grand Staves in the Layout. This allows you to set up broken bar lines, spacing, brackets, etc for the first Grand Staff, and then easily apply these settings to all other Grand Staves:
1. Make settings for the first Grand Staff in the score.2. Pull down the Score menu and select “Copy To All Grand Staves” from the Format submenu.
The settings are applied to all following Grand Staves.