Wordpress + Gravity Forms expert

Hi, I'm looking for a dev who can help me developping a plugin for Gravity Forms. Here is the documentation to create an Add-on for Gravity Forms: [login to view URL] The plugin has to add a link as shown on the screenshot (black square). He must allow to combine all files sent in the forms (it's only pdf) into a single pdf. You can use this library: [login to view URL] When you click the link, you should go to a page that lists all inputs type file with their values and allows the user to order it with a system of drag and drop. The order must be saved in the database. Each time the order is updated, the values are stored in the database. Also, make sure that if I add inputs in the form, it's won't break the module. Some fields contain mutiple files. If field A have 2 files, the plugin should show 2 entries: A label - [login to view URL] A label - [login to view URL] It should also add a checkbox to prevent the file from being included in the process. By default, all inputs are checked. If I uncheck one input, he is excluded. All the PDF must be stored in this folder: /wp-content/uploads/gravity_forms/pdf/[login to view URL]