These are the instructions that I used.
Flexible Answer Point
Description
Flexible Answer Point lets telephone and console users send their calls to another location when the system is in Night Service.
Flexible Answer Point lets station and console users program a night answer point for their incoming trunk calls. Any telephone calls to an extension number listed in either the Trunk Service Assignment form or the Intercept Handling Assignment form will respect the Flexible Answer Point commands that are programmed against the extension number.
Conditions
The station must appear in either:
the Trunk Service Assignment form (Day, Night1, or Night2)
an instance of the Intercept Handling Assignment form.
The destination:
can be a valid extension number within the local system
can be the same number as the station affected (which will cancel the Flexible Answer Point programming for that station)
must be a DID extension.
You can enter a maximum of ten Flexible Answer Point commands in the system.
A Hot Desk user DN cannot be a Flexible Answer Point. If a Hot Desk user is logged in on a Registration DN that is a Flexible Answer Point, calls will follow out-of-service handling.
Programming
Enable Flexible Answer Point in the Class of Service Options Assignment form.
Assign the following Feature Access codes in the Feature Access Code Assignment form:
Flexible Answer Point
Flexible Answer Point Cancel All.
Operation
All telephones
To set up the Flexible Answer Point:
Dial the Flexible Answer Point feature access code.
Dial the number of the station.
Dial the new number.
To cancel the Flexible Answer Point on a station:
Dial the Flexible Answer Point feature access code.
Dial the number of the station.
Dial the number of the station again.
To cancel all Flexible Answer Points:
Dial the Flexible Answer Point Cancel All feature access code.