Add Carousel and Grid Block
- Go to your theme editor: Admin → Sales channels → Online Store → Themes → (on the desired theme) Customize
- Select the Collections template in the dropdown at the top and pick the Default collection option (or another required collection)


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Click Add section in the panel on the left 
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Select Carousel & Grid from the list of Apps  
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Set your preferences in the top-right menu: 
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Display by Categories, Vendors, or Collections (read more about Categories) 
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Carousel or Grid mode 
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Show Top-level categories (only when displaying by Categories in either grid or carousel mode; has no effect on brands or collections) 
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Filter or Links mode tiles in Carousel mode (no effect in grid mode) - Filter: The customer stays on the same page, and the products are filtered according to the the selected option (Categories, Vendors, or Collections)
- Link: The customer is being redirected to a separate page
  
- Click the Save button in the top-right corner to apply the changes
 
 
 