Hi @timbaron ,

This feature is still in Beta. First of all check if you have enabled it in Priviews (as they suggest in docs):

Use Agent Bricks: Information Extraction - Azure Databricks | Microsoft Learn

Note, that access to some Beta features could be gated. Then you need to contact with databricks team and ask them directly to enable this feature for you.
Click send feedback and you will find a textbox where you can describe your issue. There you can also find Help Center section - it could be useful to find another means of contact: