Choose download client based on indexer

Sonarr version (exact version): 2.0.0.5344
Mono version (if Sonarr is not running on Windows): 5.20.1.34
OS: Debian 10
Debug logs:
Description of issue:

I’m trying to set up sonarr. I have several indexers configured tornzab / jacket
Some are private sites and some are public.
I also have 2 download clients configured one for public and one for private. I think it’s a fairly common setup. But I can’t find any way to tell sonarr which download client to use for each indexer.

Is this possible?

Not possible, there’s a github item for it though so maybe one day: https://github.com/Sonarr/Sonarr/issues/1215