First check in CDB to see what the station control password length is.
LD 21
REQ PRT
TYPE FFC
CUST 0
....
SPCL (a number between 0-8)(this is your station password length, if it is 0, go to LD 15, repeat down to SCPL and enter a number ?[4]
Now go to LD 57
REQ CHG
TYPE FFC
FFCT YES
CODE RCFA
RCFA (this is where you enter a code for call forward, i.e #77)
RCFA
CODE RCFD
RCFD (this is the code for deactivation, i.e #78)
RCFD
Now go to LD 11
REQ CHG
TYPE (type of phone)
TN L S C U
....
SCPW (a password for this station, length to reflect SPCL in ld 15)
KEY X CFW (make sure set has cfw)
OPERATION;
From any set 1. dial remote call forward FFC
2. dial station control password of set to be forwarded
3. dial prime dn of that set
4. dial the number to where the call will be forwarded
5. hang up. Done