Pick an overlay, drag its pieces around in the preview, then save the layout under a name and copy the link for OBS or StreamElements.
Load an overlay to see saved layouts.
Pick an overlay on the left, then click Load into editor. Once it's loaded, drag any piece of it directly in the preview — an "Edit Layout" toggle appears inside the preview itself.
No overlay loaded
Select an overlay on the left and click "Load into editor" to get started. Everything here works on the live overlay file itself — what you save is exactly what OBS will show.