How can I change default authentication method ?

Hi,

How can I change default authentication method to SAML by default?

The majority of my users use Azure, so can use SMAL.

Only 5 users don't have Office365 account. So, I cannot change for all users.

In Rainbow, I don't see the option to change the default as explain in this tuto : https://support.openrainbow.com/hc/fr/articles/360008866099-How-to-Activate-the-Single-Sign-On-between-Azure-Active-Directory-and-my-Company-using-SAML-EN-