Add some extra features to a wordpress plugin

This is the plugin and some addons of that plugin. the mail plugin is affiliate enterprise. other two are the add ons. install this plugin and check how it works. check step by step. you can also get the documentation of that plugin here. [login to view URL] install this plugin. see the documentation and check how it works. I want to add some custom features in this plugin and make some design changes. I need the following features to be added in this plugin. • The downline structure should look like a [login to view URL] the image. • There should be option to add a affiliate manually as a downline of another affiliate from backend. • There should be option to see affiliate earning and downline details in backend. Including contact email of affiliate downline. • Options to see your whole downlines group volume sales. • Admin should be able to add or deduct amount to affiliate accounts. • if a sale gets refunded it should deduct from all affiliate accounts that got commission (with details and notification of deduction) • When A sale happens in your downline you should receive email notification. • We will be using an affiliate payment processor, so commissions will need to be able to do bulk exports of commission files/data. • Option to send bulk emails to your downline