Therefore, there's no reset button or procedure to "reset the change oil soon" light. Once you change the oil, the light will remain on until it's manually turned off (if your model even allows that). Most mechanics will turn it off using a scan tool but it's not a necessary procedure. Since it's a simple indicator light, most people simply ignore it after changing the oil.
To be clear: Changing the oil is the only way to address the "change oil soon" indicator. The light serves as a reminder; it's not a sophisticated system requiring a reset.