We have Okta enabled for Tableau for the whole enterprise users. Let's say our domain is abc.ae. There is a requirement where we need to onboard a partner from a different domain (his company) to access dashboards. Assume his domain is xyz.com. We have allowed him to be authenticated by Okta so he passes the Tableau Okta App but Tableau failed to authenticate him. It seems a user account within Tableau is required. However, Tableau only allows users from abc.ae domain and I cannot add the user from xyz.com. How do I go about this issue? There is an article about Enterprise Trusted Domains but if the partner domain is Gmail.com, we have an issue.