I see you also posted about this on the Facebook group, which is great. As Chris said over there, we would need a bit more information on how this is not working, if you are able.
You can put the description here if you are able and we can figure it out.
select channel, press enter. press [About]. right hand side in the CIA there is a button "LampControls", click it. now you see a button LampOn. either double click it or click once and press enter.
Eos Family doesn't record this into cues by design. But you can if course record a macro with the lamp on command and then automatically execute the macro from your first cue