Social application

I have a website business idea, an integration and communication network between companies and general public users, prospective employees or users in the work force are grouped per companies they work, company can delete employee from set group. Users search and place appointments on companies. Users and companies can communicate. Companies can request or recruit other users within the network to assist with information provision across the network and handle customer queries.
I need this to be an app but also accessed through browsers.
I already have the entire blueprint on PowerPoint.
A detailed presentation of each and every page l, colors, layout and a description of what each button or link does or where it goes.