Found it. I was looking in the wrong manual.
There are a couple of ways to accomplish it.

For the sake of the search function, here is how you do it (the most universal method):

> #20 1234 1#
> #39
> You will see a string of 16 zero's. Each one represents a station. You use the numpad to enter a code as follows:

3: can barge/cannot be barged on
2: can barge/can be barged on
1: cannot barge/cannot be barged on
0: cannot barge/can be barged on

Enter one of these values for all 16 digits

> #

The default is all zero's.

[This message has been edited by bradleyland (edited November 05, 2004).]