Do your Citizen Developers train new Citizen Developers, or do you rather have trainers e.g., selected from your RPA Developers?

I think this can be done both ways. If there are Citizen Developers who have the right skill to train others, it’s a great opportunity for them to demonstrate what they learned.

Hey,
A business-oriented individual, willing to automate own process can learn from various resources.
UiPath has its academy with courses around StudioX for citizen developers.
UiPath Academy
Various YouTube videos can be resourceful.
Getting help for co-workers, who are involved in automation like RPA developers/Solution Architectures, is also a great to learn.

Hope this was helpful.