This is the procedure:
BUT IT DOESN’T tell you how to assign people to this role to approve or reject! I did it before but I can’t remember where the heck the setting is. It is so hard to find it. Like a needle in a haystack.
This image is how the document looks Pending in the library:
This image is how the person can approve or reject the document.
You need to give the user the Design role on the library containing the item. This link describes setting permissions.Â
I think this can be done at both the site and list/library level. For site level, site settings>site permissions. Select the group the user is in and give them Approve permissions. Go to list permissions if you just want a user to approve items for a specific list.