I just found a Massively useful programming trick (undocumented) for NCE Light-it decoders.  Useful when you want Many to act in similar fashion.  I'll set mine to flash the red light on my cabeese.

To program many cards with a common lighting effect,  pigtail them together and proceed on One card... After you have set it up, you'll find all will get programmed.

The group will have the same program thereafter.

(Thanks, Prof... link below to my post on NCE website)

https://ncedcc.zendesk.com/attachments/token/0BV2g4z8SQK5ScaLIDZa8KCus/?name=NCE+Light-it.wmv