1. Enable the app.

2. Click the Add Pixel button.

3. If you want to add a Master Pixel, select the variant and add the pixel you want.

4. If you want to add a pixel for a specific collection, choose the Collection Pixel, select the collection you want and then add your pixel.

5. If you want to fire a pixel for a specific activity, you can tag them in Shopify with the "tag_" prefix (ex.: "tag_watches, tag_men_watches, tag_women_watches") and add a tag pixel.

6. Check with the Facebook Pixel Helper Chrome Extension that your pixel is firing. 

7. Don’t forget to save your changes.