Hello.
I’d like to create a new custom orchestral template, with some different instrument settings.
I searched the manual for an answer but couldn’t find any.
Apologize if this has already been asked
Create the setup you need, save your empty project and use it (with a save as at the beginning of your work)…
It would be nice, however, if you could create custom templates that are then shown in the categories in the project setup window.
I totally agree with you 
I believe this is planned for the future.
+1
Could you make it into a Stationery pad for now? (Maybe you are already doing this) 
+1
Also: A good product idea for whoever wants to make money!