2 column product gallery product page (desktop only)

Would love the product gallery to be 2 columns, like this reference:

https://www.allbirds.eu/products/mens-tree-runners

Anyone know the code for this?

Also do not know where to make global and advanced (product-specific) tabs after updated to 6.0.0?

Anyone with same issue? I cannot find “content” in the add-section as described in the supportfile