PLANET SG-1000 - Manual (Page 77)

6.2 Setting service group and restrict the specific users only can access
to service resource that provided by this group through policy (Group:
HTTP, POP3, SMTP, DNS)
STEP 1 Enter the following setting in Group of Service:
„ Click New Entry
„ Name: Enter Main_Service
„ Select HTTP, POP3, SMTP, DNS in Available Service and click Add
„ Click OK
Add Service Group