- Sections and blocks: add, reorder (drag the handle), hide (eye icon), duplicate and remove. Changes appear in the preview immediately and go live only when you save on a published theme.
- Selecting items in the sidebar:
- FAQ questions, collapsible rows and lookbook looks open in the preview when selected.
- Selecting the Cart drawer section opens the drawer.
- App blocks: add them inside Product information and Featured product with Add block. The app must be installed first. Apps that add full sections appear in Add section.
- Header and footer groups: you can add sections above or below the header and inside the footer area. They show on every page.
- Templates: use the page selector at the top to edit other templates. To use a different layout for some products, choose Create template, then assign the new template to products in admin.
- Undo: use the editor’s undo button or Ctrl/Cmd + Z before saving. After saving, use Online Store > Themes > ⋯ > Duplicate before big changes, so you have a backup.
Arcella documentation
Working in the theme editor
Still stuck? Contact support with your store URL and the steps to reproduce, and we’ll reply within two business days.