How does adding users in HRIS interact with SSO/SAML?

Your SSO/SAML integration would continue to work as it currently does and your employees would need to be granted permission to Float within your SSO/SAML system to access Float. An invitation sent from Float (either manually as can currently be done) or through our suggested users surfaced from the BambooHR integration would not be sufficient - your SSO/SAML system will ultimately control who can access Float.