EmployeeID configuration under NameID or InitiateSSO

How can I set my EmployeeId under NameID?
While I am redirect to Monj it will logged in with same user id every time.
Is there any doc with full example for webform?

The SAML NameID is set with the value you specify as the userName parameter to the SAMLIdentityProvider.InitiateSSO and .SendSSO APIs.
Set this parameter to the employee ID.