As far as I know, you can only program the ZW-C as a Track ID, with a further restriction that you can only us Track IDs 1 thru 6, as you need four address, one per voltage control, the the max ID is 9 (i.e., if you assign ID 6, the controls would be 6, 7, 8, and 9).
The ZW-L can be addressed as a Track or an Engine, with no ID restrictions other than not using Engine ID 99, the universal Legacy Engine ID.