META tag for specific page

I have a URL of which I need to set specific META tag title, description and keywords on. I came across instructions on 2.1.x at CS-Cart Documentation — CS-Cart 4.15.x documentation which worked great for setting the specific META for the home page. But I need to be able to set different information for each page and each category. How do I do that? I don't see anything in my admin area which refers to

In the product details page towards the bottom, Page Title, meta desc, Meta keywords

See screenshot

Same in the product categories too.