The slug is the part that we use in the new tab’s url. If the slug box is not visible to you, Please follow the following steps to enable slug for editing.
Step 1:- Find the Screen Options.
Look at the top right corner on the new tab/edit tab page, You will see a button for “Screen Options” as shown below
Please click on that.
Step 2:- Enable Screen Options.
You will see a screen with the following options:-
Please make sure to check the “Slug” option. As soon as you do it, you will note the slug box below the tab title option as shown below.
That’s all. We are all set.