How to handle Pause and Resume in Custom Assistant

Hi all,
How to handle Pause and Resume in Custom Assistant? I’m using a Custom Assistant (i.e not Alexa) because I want to add multimodal to it. And this is my first project. I still don’t know much about voiceflow, just try to learn from the tutorial. But could not find solutions for my project. I use intent to create Pause, but don’t know how to resume back to the point that the user says “Pause”. Any suggestion would appreciate.