Smart Lists are sorted alphabetically by default. To change the order of Smart Lists:

1. Hover over the Smart Lists header.
2. Click on the dropdown arrow to the right of the header name to display settings.
3. Click Sort by drag and drop.

When Smart Lists are sorted by drag and drop, hovering over a Smart List will now display a drag handle to the left of the name.

Now you can reorder your Smart Lists by drag and drop:

1. Click and hold to the left of the name to pick up the Smart List.
2. Drag the Smart List to the desired position.
3. Release to drop the Smart List into position.