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

Permissions:
  i_group_modify_power
  i_group_needed_modify_power
  i_permission_modify_power

Description:
  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 permid=17276 permvalue=50 permnegated=0 permskip=0|permid=21415 permvalue=20 permnegated=0
  error id=0 msg=ok

  servergroupaddperm sgid=3 permsid=b_virtualserver_modify_maxclients permvalue=1 permnegated=0 permskip=0
  error id=0 msg=ok
