That is incorrect!
Favorites Lists are X and E
Systems are .X and E
Departments/Sites are ..X and E
To refine that a little farther...
Favorites Lists are XX and E
Systems are XX.YY and E
Departments/Sites are XX.YY.ZZ and E
(XX/YY/ZZ can be one or two digits each)
While the quoted format will work AS LONG AS you are
currently scanning the FL snd/or System you want to control, what I posted will always change the intended QK - even if you are currently scanning a different FL or System.
On the original post, if you have a 436 and use Sentinel, just open Sentinel, change the scanner type to the SDS100, and write to his scanner. You must be using the latest version of Sentinel to do this. It will then program his scanner the same as yours. You will lose some of the unique display settings, however.
If you want a more involved (but complete) way: Export your FL to an HPE file and store it on a flash drive. Install Sentinel on his PC, READ his SDS100, IMPORT your HPE file to his Sentinel, set the MONITOR ON and DOWNLOAD ON in the Profile as well as any Favorites List Quick key(s), then write that to his scanner. He will then retain the unique features like the display colors and layout.