Usage: servergroupaddperm sgid={groupID} ( permid={permID}|permsid={permName}
       permvalue={permValue} permnegated={1|0} )...
       permskip={1|0}...

Adds a set of specified permissions to the server group specified with sgid. 
Multiple permissions can be added by providing the four parameters of each 
permission. A permission can be specified by permid or permsid.

Example:
   servergroupaddperm sgid=13 permsid=i_channel_join_power permvalue=50 permnegated=0 permskip=0|permsid=i_client_talk_power permvalue=75 permnegated=0 permskip=0
   error id=0 msg=ok