Plethora X5 - How to keep echo decaying off after you turn the effect off

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Hello,


On the Plethora X5, I would like to kick off the echo while having it finish the last decaying echoes versus just a hard stop of sound.  Is this possible via the Toneprint app?  I have tried to find where I would allow echos to ring after turning off effect but can't find anything. Any assistance is greatly appreciated.  Thank you!