Player groups
A group represents a collection of musicians that are considered together, such as one choir in a work for double choir or an off-stage ensemble. Player groups can have their own brackets, depending on the bracket grouping set for each layout.
Grouping players together means they are positioned together in the default player order, numbered independently of players outside the group, and are bracketed together according to the ensemble type set for each layout.
For example, if your project is for double choir (SATB/SATB), all voices are joined by a single bracket by default because they are in the same family. However, if you add each choir to its own group, they are bracketed separately. This is useful in works containing multiple groups, such as in Britten's “War Requiem”, which has three distinct groups, or in Walton's “Belshazzar's Feast” which requires two separate off-stage brass groups.
You can add as many player groups as required, for example, to allow easy separation of forces or to prevent automatic instrument numbering for percussion instruments when multiple percussion players hold the same instrument to accommodate instrument changes.