Add external storage: Google shared drive

Hello,
I just installed owncloud through docker and I am very happy with it.
I added local storage and now I would like to add external storage: Google Drive and Google Shared Drive.
Concerning google drive, the documentation is well done so it was easy to configure.
But I have a google shared drive and I don’t find any documentation on how to add it.
Could someone help me to find a solution?
thanks