Adding Google Assistant for family members

Hello all,
I’ve got a relatively new installation of Hass.io up and running. So far I am loving it, but I seem to have hit a snag. The other day, I got HomeKit up and running, and it was a breeze. Then I sent invitations to the iOS users in the house to join the Home. Worked like a charm.
Now I’m trying to do the same thing for the Android users in the house (we are a house divided), and it seems as if it isn’t as easy. I do have Google Assistant working with Home Assistant on my iPhone, but it doesn’t seem as if there is an easy way to get the other Android users added in.
Does this sort of functionality exist? Or will I need to log into Home Assistant Cloud on every Android device (and then customize each Android device individually)?