Multifamily Online systems are for authorized users only. Before an authorized user can Login to any of Multifamily's online systems they will first have to Apply for a user ID and Password for general access to HUD's Web Access Security Subsystem (WASS). Registration Instructions are available from HUD's Office of Real Estate Management (REAC). All users must access WASS and Reset their Passwords at least once in 90 days to maintain active status. The user is presented with the required Rules of Behavior (ROB), which must be accepted during initial login and then annually thereafter.