The functionality is turned on in the EHR.
Upgrade to SOAPware v2010.1 in the Spring of 2010 (or subsequent version before October, 2011). Drug-Drug, Drug-Allergy and Formulary checks are to be performed against prescribed meds, Summary Medications, and Summary Allergies.
Before October, 2011, upgrade to a later SOAPware version. In a version subsequent to v2010.1, functionality will be added to:
Provide certain users with administrator rights to deactivate, modify, and add rules for drug-drug and drug-allergy checking.