Programming a Poker II involves two steps:
1) Press the key you wish to program
2) Press the key(s) that you wish to have emitted by the key in step 1
As such, you cannot program it to do anything that it doesn't already have a key for: you can only shuffle existing keys around or compose macros of existing keys. This could be solved by allowing a key to be programmed to a scancode instead of a macro, but they didn't think of that. For a 60% keyboard, that is quite an unfortunate limitation.