Gemini API not allowing connection to datastore

[vp-code]

I get the following error:

_InactiveRpcError: <_InactiveRpcError of RPC that terminated with:
status = StatusCode.INVALID_ARGUMENT
details = "Cannot use enterprise edition features (website search, multi-modal search, extractive answers/segments, etc.) in a standard edition search engine. Please follow https://cloud.google.com/generative-ai-app-builder/docs/enterprise-edition#toggle-enterprise to enable Enterprise edition.

The link tells you to do stuff on the Agent Builder page, but there's nothing there that allows you to enable Enterprise edition. Anybody know how to get this to work?