Best way to use controllers that do not work with Retrobat?

I'm using the Official Nintendo Gamecube 4 players adapter for use in Dolphin. It works great.

The controllers do not work in the Retrobat menu however.

What is the best way to set this up in terms of entering/exiting games?

Do I need to use a working Retrobat controller first for example.

Thank you.

"hello".

Maybe this can help you
https://retrobat.forumgaming.fr/t135-faq-retrobat-wip#1282
When you try autoconfiguration, your controler doesn't appear ?
If you try here, what is the result ?

BTW, on the V5, mouse can be used to navigate. So it can help you.

If it's really not working with RB and you can't get that sorted, try xpadder.