From my frontend, I can use django-allauth to authenticate a new Google user with the following endpoint:
myapp.com/auth/google/
I would instead like it to authorize the account for an existing user, enabling the user to access multiple gmail accounts from my application. I presume it's possible because it seems like the models are set up to accommodate this. However, I can't find any documentation for adding a second account to an existing user through allauth's api.