Facilitator & Locations
When you're setting up your study, you specify the location by clicking the Facilitator & Locations item on the sidebar in scheduling > calendar.
Editing the location for a single time
Sometimes you need a different location for one session. Maybe a physical lab got booked at the last minute, or you need to swap in a different URL for a remote session. You can do that by clicking any future interview spot on the calendar and then clicking the edit button next to location. You'll see this warning: