Help with variations

I have set up attributes and also variations for size.

It works great, once user clicks on brand they are then taken to selected brand with (variations size) drop down box (3-4 years, 5-6 years, 7-8 years) and this is great and correct.

However I also want user to be able to shop by age, so if user doesn’t wish to shop by brand they can click the age they want which takes them to all the brands we have in the age customer selected, taking them to brands with just the age selected and no drop down box (size variation).

I cannot work out how to do without it being a long process of adding product linked to categories for each age and individually adding each brand relevant to the size to that category via variations. Am I missing something obvious?

I have set up Angry Birds (under Shop By Character(on right)) which is an example of a brand with size variations and is correct.

The Shop By Age is the one I cannot work out? Click on 12 – 18 months and it takes to product-category/product-category-1/ (with a 404 because that page obviously hasn’t been set up because I am not sure of best way to proceed.

http://jimjamsdirect.com
https://wordpress.org/plugins/woocommerce/