Unfortunately. I'm really sorry for this inconvenience, as this feature is still under development and we will be releasing it soon. 

Currently I would recommend creating a new sub page and then drag & drop "Product List" element from left sidebar and let it act like a collection page. 

Product List element automatically pulls products from a specific collection to display. 

I really hope it helps! Feel free let us know if you have any questions or suggestions there :) 

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