Playing back Arpeggiated Midi parts consistently?


I’ve just begun playing around with Arpeggiators and everytime I (press) play a part, it is different upon each playback. Even when I render to audio without playing the Part, and say, render the part to Audio 3 times (one after another without playing any audio). I am new to arpeggiators and wondering if there is a way for the Arpeggiator to “Reset” so when I playback, it’s always the same. Like how a Keyswitch has to be hit to reset to a specific Articulation? I have been trying to use NI Retro Machines and the Arp within.

Thanks for any advice