Key system setup

[SUSD]

3300 MXe 2-Clustered Rel 4.2 / 10.2.0.26_2  EMB-VM 6-SX200 10-ASU

So this system I'm managing has a number of key system setups for different departments. But I tried to set one up myself and at the phones (4025) when I assign a button as "key system", the system changes it to single line.

I didn't have the Hunt Group and Members established yet, I was just assigning the numbers I planned to use on the buttons on the phones.

So, I was wondering if anyone has recommendation on a proper order / steps to follow in making a key system setup ?

Thanks.

[bluewhite4]

If the lines you're setting up on your phone, don't exist anywhere else, then they should change to single line. Key system indicates a single line that appears on multiple phones.