Since version 1.3.0+

1. From your Shopify admin, go to Online Store -> Themes.

2. Find the theme that you want to edit, and then click Customize.

3. Choose Products from the dropdown window. Select ajax_quick _view template.

4. Click Product Information.

5. Click Add block and choose the block type that you want to show.

The theme admin editor only reflects the general layout and positions of elements on screen. For the accurate buyer's view, please view your store in preview mode.