Can I make Stage Manager work somewhat differently?

I know how Stage Manager works, but I want to make work differently. The default works like this: when I choose one of group in the Cast Part, then all apps are hidden and all apps open up in the Stage Part which are apps in the selected group. And I want to make like this: when I choose one of group in the Cast Part, then all apps remain as is, and all apps open up in the Stage Part which are apps in the selected group.