Hi Chevy, for the IA ON/OFF function you have to be on the latest OS, the older ones dont
have it. The Synths me and AJ have are always at least 2 OSs ahead of the regular users.
You better check what version you have and then download the new one from Ketron.it.
You will find the function under STYLE/ARRANGER page, same Arrange Mode on SD5
somewhere on page 3, it will say IA ON/OFF or IA CHORDS ON/OFF...if its there you'll see it.