Staff labels on condensed staves
Staff labels on condensed staves must reflect all the players included on the staff. Dorico Pro automatically consolidates similar instrument names in staff labels on condensed staves but always shows all the required player numbers.
On condensed staves containing different types of instruments, all required instrument names are shown.
Because condensing can change frequently, staff labels on condensed staves can vary from one system to another. You can change how player numbers are stacked in staff labels on condensed staves.
Dorico Pro also shows player labels above/below condensed staves to identify the players to which notes on condensed staves belong, as condensing can change within a single system.
Your setting for the grouping of staff labels of adjacent identical instruments applies to adjacent condensed staves with the same instruments, such as if you have a condensed staff for Flutes 1-2 and a separate staff for Flute 3.
Your settings for staff label numbering styles also apply to condensed staves.