Each module automaticallly adds the urls to the table as you create new content. So for example, if you add a new article the code automatically creates an
SEO friendly URL (known as a slug I found out recently) and stores the mapping in the table when the article is commited to the database. So there is no page in the admin dedicated to managing these URLs.
I have added pages to sites I have developed over the years to do this, but found that site users just get confused by the page and it really was not productive in the end. Automatically taking care of this for them worked out much better.