I don’t know if anyone else has found making custom Layout groups while composing as helpful as I have.
With separate Layouts for Woodwinds, Brass, Strings, etc., I can quickly focus on work with just those classes of instruments. The same is true for instrument families, Flutes, Trumpets, Section Strings, etc.
One other thing I am intrigued by is the use of ad hoc groups. I’ve created a “Composition” Layout where I can select from the whole composition whatever Players I want to appear in the Layout when working on a particular portion of the composition. REALLY useful.
Now to the Feature Request:
To select which Players will be included in any custom Layout, I right-click and select/deselect from the list of Players. This list can be quite lengthy for full orchestral scores. But the list closes each time you select/deselect a single Player. It would be ideal if the list stays open for multiple selects/deselects, with the user being able to close it when finished.