For help on setting it up, please view this article.
Antidote integrates with Google Docs with an add-on compatible only with Google Chrome's Antidote connector.
This add-on requires your authorisation to interact with your documents. At the start of each session, you must start the script to allow execution.
The corrector, dictionnaries and guides are available in the side bar.
You can correct the whole document or a simple selection.