Slugs are used in the permalink structure and are created by default in WordPress. If you do not choose to define the slug, it will be automatically generated using the title of the post or page, separating each word using hyphens. While the auto-generated permalink may contain some key words, WordPress has given the user the ability to set the slug to contain the most optimized key words. The following tutorial will show you how to edit your slug in WordPress.
Go to Site Backend
Click All Posts or Pages as seen in the new interface or run your mouse over the Page or Post icon and click All Posts or All Pages as seen as the WP–Admin. All images in this tutorial will feature these two examples in the same order.
Select the Post or Page You Want to Edit
Here you will simply click Edit as seen in the first image or click Edit from the drop down box as seen in the second image.
Edit the Slug
In the new WordPress interface you can simply edit the slug or click edit as seen in the second screenshot.
After you have edited your slug don’t forget to click on Update for your entire Post or Page.