If you want to go live with our overlays, you need 2 devices: your phone and your laptop. Your phone is the streaming device (ie camera).
On your phone, go to the Overlays tab to click on your overlay URL. The easiest way to do this is to go into the Shopify app from your phone, then go to the SoldLive app, and then go to the Overlays tab.
On your laptop, you'll have the Overlays tab open so that you can control the overlay and see the 3 most recent comments in the Preview section of the Overlay.
Here's a 2-min video on how to go live with our overlays.