You can configure policies in the Web Services Policies, Edit Policy section of EM. You can also copy the custom SAML Identity Policy. To do this, copy the oracle_wss11_saml_token_identity_switch_with_message_protection_client_policy.txt file located here: http://download.oracle.com/docs/cd/E20686_01/English/Technical_Documentation/Oracle_BPM/oracle_wss11_saml_token_identity_switch_with_message_protection_client_policy.txt.