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Phoneserv.com had some great information:

Norstar 308,616,and 824 Key Service Unit Programming

Template For M7208 Phone





Template for M7310 & M7324 Phone
This Template goes on the top 4 buttons of your phone






Entering administration Programming for time, date , speed dial and names.

Feature ** 266344
Password = xxxxxx
Follow the overlay from here.
If you would like to enter the programming that is listed in the display hit SHOW.
If you would like to see the next item in programming hit NEXT.
If you would like to change an item in programming you would SHOW that item and then CHANGE that item.
If you make a mistake and miss a heading just hit your BACK button to return to the previous heading.
If you would like to get back to the main heading just hit the HEADING button.

EXAMPLE PROGRAM: I want to change the clock for daylight savings time.
feature ** 266344
password xxxxxx
press NEXT until you see time and date.
when you come to the time and date prompt hit the SHOW button.
hit the NEXT button till you come to the hour.
at this point you will hit CHANGE until you have the appropriate hour.
once this is complete simply hit your RELEASE button to save the program.

****** IMPORTANT NOTES ******
The 308 and 616 KSU can be programmed with any style Norstar telephone.

The 824, Compact ICS and the Modular ICS KSU must be programmed with an M7310 or a M7324 telephone. (A M7208 will not program these systems.)


Norstar Compact ICS And MODULAR ICS Key Service Unit Programming:

feature ** 266344
password xxxxxx

follow procedures for programming from above.