Deepmind 12, where is arp to midi function?

The manuel states that 18. global commands Arp Send to MIDI 0-1 Enables transmission of arpeggiator output to MIDI out (both USB and physical MIDI). how do i get this to work? I can't find the enable menu anywhere!

I was hoping i could use the arpeggiator for my other synths any help would be appreciated