The configuration-driven section is shown if you scroll down a bit: https://neuml.github.io/txtai/workflow/#configuration-driven...

Here is a link to a live example: https://huggingface.co/spaces/NeuML/txtai?default=search+hac...

And configuration for the live example, which is no-code: https://huggingface.co/spaces/NeuML/txtai/blob/main/workflow...