Thanks. I couldn't find anything titled "Settings for Early Access Apps" or "Core Data Access Permissions," but I did enable "Early Access Apps" and was told to wait 24 hours, which I guess is a cooling-off period or something, because I can't imagine that could be a caching policy.
And as another commenter predicted, searching the admin console for "Bard" turns up no settings.
And as another commenter predicted, searching the admin console for "Bard" turns up no settings.