approval workflow2 contract approval2 perfex crm2 perfex module2 addendum management1 approval rules1 audit trail1 clause library1 compliance1 contract lifecycle1 contract management1 contract template1 digital contracts1 document signing1 e-signature1 electronic signature1 erp1 expense approval1 financial governance1 internal controls1 invoice approval1 multi entity approval1 perfex1 proposal approval1 rule engine1 vendor contracts1