Simple way to generate image using Gemini API free tier

I've hunted using AI and search to find a fool proof way with full and easy instructions on how to generate an image in OpenWebUI using a Google Gemini API free tier API without any luck.

If I find any information, its from months back, incomplete, or is a "function" or "tool" with limited documentation.

Can anyone share the settings and methodology that works for them?

Like: Admin Panel ---> Settings ---> Image

https://imgur.com/a/S3hDSJu

Then what is the process, start a new chat, click <Image> in the chat toolbar and type "create an image of a monkey"?

Any help appreciated!