SSO for fortiportal using shibboleth idp

Hello,

I am new to Fortiportal and shibboleth can anyone guide me how to configure Fortiportal for SSO using shibboleth IDP . and what attribute would be require to pass from attribute-resolver.xml(IDP side) to log in to fortiportal. I guess user role will be one of required parameter and user name but can you tell me how to configure these parameter from fortiportal