Enable the app embeds (Cart Drawer & Popup)

The Cart Drawer and Popup placements run as Shopify app embeds. App embeds are enabled once in the theme editor and then apply across your storefront — there's no per-page setup.

Turn on the embeds

1. In your Shopify admin, go to Online Store → Themes and open the theme editor for your live theme.
2. Open App embeds (the toggle/plug icon in the theme editor sidebar).
3. Enable UpsellEngine — Cart Drawer and/or UpsellEngine — Popup.
4. Save.

Screenshot: the App embeds panel in the Shopify theme editor with the UpsellEngine toggles. (TODO: add.)

What each embed does

• Cart Drawer powers the one-click upsell inside your slide-out cart. See Cart upsells.
• Popup powers popup offers with triggers (add-to-cart, exit intent, time, scroll, cart value), display modes (modal, toast, banner), and frequency capping. See Popups.

Note: Enabling an embed makes the placement available; it still only shows when a matching offer's trigger fires. Create offers under Offers.

If an offer still isn't appearing after enabling the embed, see Offer isn't showing.