It's possible define the order by show the icons?

Yes. After you plug your URLs into the widget and click “Save,” the icons will appear in the widget, and you can click and drag them into the order you want.

Does this also work for custom icons? I can’t seem to drag anything with mine…

Thanks!

Never mind! Just found this answer!

“Just to point out, you can order your custom icons by adding all your URLs, saving, and then selecting one of the predefined icons. This will allow you to drag and drop reorder them, save, and then switch back to custom icons. You won’t notice a change in the widgets page, but it successfully holds on to your custom order.”