There are three steps to share a page with your organization in Tines via Okta.
Ensure that Tines has been assigned to the colleagues who need to access the page
Ensure that SSO is configured for your tenant. The option to select SSO will not appear unless SSO is configured for your tenant.
Set the page as "Public" and tick the "Require SSO" option
To learn more about pages distribution and access, see here.