It is quite easy to configure BLF in MSS. Please click menu 'data / local user', and click 'Advance services' tab in local user's configuration dialog:

| Item | Description | 
|---|---|
| Subscribe all users' presence or dialog information | BLF service right.  Only enable this item, current local user can get other local users' status.  | 
            
| Presence information group | BLF group. It can be blank.  If BLF user is configured with this item, that means it only cares presence information sent by local users in the same group.  |