Strict policy will make much more troubles than gain, as i have learned from long experience - SMB locally managed should be just configured with only minimum effort using standard policy and build-in objects, and everything will run smoothly. Remember that this is Embedded GAIA only, and not GAiA with Dashboard and its possibilities !
Looking into $FWDIR\conf\objects.C is interesting, but mostly not helpful at all; since R80.xx all configuration is kept in SQL database instead of objects.C, and on SMB devices, there never was any objects.C file.
So the best to do IS always RTFM first and - in case of difficulties - contact TAC by chat to get a quick resolution.
CCSP - CCSE / CCTE / CTPS / CCME / CCSM Elite / SMB Specialist