Custom meta box repeating function (worpress) - repost

i need only one code alternation in my function php file. i am attaching my function.php. actually the work is i have created a custom meta box with 2 text field, one text area and one taxonomy (category field) in one meta box. i need this repeat (entire meta box) by a button clicking. this repeating is unlimited or capping in 30 block or so. it will dynamically show on [login to view URL] file (result / value) go through the file and reply me as earlier possible. here is 3 screenshots, it will explain more what is my need.