Hi,
It's by design in Small Business Edition.
Small Business contains only three tabs under Admin page.
To reduce DB & log size you can try this tool.
Shrink the Symantec Endpoint Protection Manager 12.1 embedded database
https://www-secure.symantec.com/connect/downloads/shrink-symantec-endpoint-protection-manager-121-embedded-database
Also check this article
Symantec Endpoint Protection Manager (SEPM) database transaction log (sem5.log) consumes excessive hard drive space in SEP SBE 12.1 RU1
http://www.symantec.com/docs/TECH178718