moog matriarch: how to "detach" the delay from the synth engine

on this rough video (sorry for the shaky english and the rough miking), the steps for using internal stereo delay INDIPENDENTLY from the Matriarch synth engine.
Connections:
Mixer Aux Send - Matriarch Multiple - Delay Inputs 1 & 2
Matriarch rear panel Delay Out 1 & 2 - Mixer Stereo Return
Matriarch Synth dry output from Main Out L & R.
Love.