Related pages

I wonder whether it is possible to add related pages in a left column block for pages.

I have a parent page "products" with about 60 subpages under it. Is it possible when editing an article of a subpage to make a selection of related pages, preferably with a checkbox or something.

Of course I can create related pages by making a navigation block, but I want different links on almost all pages (SEO)

Is this possible with the tag module (I can't figure it out) or maybe there is another extension?

Thanks a lot.

You can manage your products in BE with metamodels and present them in FE in any way you like.