To use Origins, I suggest you sit down with time and space, and ask a few questions per sitting. Let the person take the questions and share as much or as little detail as they want.
I recommend you film their answers.
To do this, lie your phone in a horizontal way, and lean it on something like a glass of water. Set it to record, and put it where the person is in full sight, but where it doesn't distract from their attention, so that they can focus on the conversation with you.