Hi Jean, welcome to the forum.
I haven't done anything remotely like that since I used Sibelius 4, so I'm not going to be of much help. In your Sibelius Reference, you may try searching for "layout", "aligning staves", "making uniform", etc. You can also find "layout" in the Index to see what subsections may be applicable.
I haven't done anything remotely like that since I used Sibelius 4, so I'm not going to be of much help. In your Sibelius Reference, you may try searching for "layout", "aligning staves", "making uniform", etc. You can also find "layout" in the Index to see what subsections may be applicable.