How do I connect to a network using Substrate Connect?

Question

I have the Substrate Connect light client browser extension installed but there are no networks listed in the options.

Click into the Options in the extension:

Clicking Networks does nothing:

How do I connect to a substrate-based network using this extension?

The docs don't give many hints. I have bolded part of the below.

For in-browser use, Substrate Connect provides a Browser Extension built upon the @substrate/light node module that is running the selected light clients inside the extension so that the end-user doesn't need to fire up a light node in every browser tab. This will also allow the light-node to keep syncing as long as the browser window stays open.

Answer 1

Apps that are built with substrate connect compatibility will detect whether the user has the extension and use it, or create the WASM light client in-page for them.

https://paritytech.github.io/substrate-connect/

For instance, Polkadot, Kusama and Westend can be accessed through Substrate Connect. After opening https://polkadot.js.org/apps/#/explorer you have an option to switch to light client

If the connection is successful, you should see it under the networks tab