When the Mujina IDP sends a SAML assertion back to the service provider, all the attributes will be added as SAML AttributeStatement elements.

Based on the Attribute Release Policy of the service provider they will be included in the authenticated user identity.

If you want to add multiple values for one attribute - for example isMemberOf - then add them multiple times.

If you add attributes and check the 'Persist me' box then the attributes will be saved under the 'Username' you have entered.

On subsequent logins with the same username the same set of attributes will be send to the Service Provider.