php javascript and html edits

Hello so I have this site and it has a stories section and I want you to make these changes to the stories section This is the customization I want: I want you to add another stories section below the existing story section where: 1. Users are required to tag another user when posting. 2. Only those tagged in other posts can view the posts of the user. 3. The viewer of the post/story can press the tagged user's link which leads them to directly message the tagged user, the message must also contain a link for the story/post that has the viewer tagged by the user(poster). 4. Story doesn't expire after 24 hours. As an example: The user posts: post 1 with tagged friend 1 post 2 with tagged friend 2 post 3 with tagged friend 3 post 4 with tagged friend 4 friend 5 who is not tagged cannot see any of those posts. friend 4 can see post 1, post 2 and post 3 since he is tagged in one of the posts. when friend 4 views post that has friend 2 tagged, they can click the @friend2 tagged link and that link leads friend 4 to send a message to friend 2. the message must have link of post 4 which has friend 4 linked in it. From scanning these are the files that need to be changed: [login to view URL] line 627 has got some javascript that I think affects stories [login to view URL] line 31 has the html of viewing the stories section. After coping and pasting another section for stories was added [login to view URL] line 5853 has got a php function included in [login to view URL] line 31 feel free to ask any missing data