I think he’s saying he wants to use code to create a Shortcut Group that would appear in the official mobile app so he could use the scheduler options that apply to Shortcut Groups.
Which as far as I know can’t be done by independent developers.
Although you can create your own shortcut group through the official app, of course.
But maybe I’m misreading it. Or maybe you can do it with code, I don’t really know that either.