Join platforms in PHP /Juntar plataformas

Hi friends, I have this project. It is a social network developed in PHP and mySQL, it is intended to unify the platforms since currently each one is totally independent with its own database. The project consists in: 1.- Incorporate the platforms. 2.- Each new user that registers will be able to see in his CRM menu, by clicking on it he will be able to access a new platform of the / CRM that we have as an example. Note: The CRM is not shared, this is unique for each user that registers. 3.- Currently the CRM has a customer and sales etc link, I need your help to know how they would look and how they would enter, since the administrator or owner of the CRM is the same user with whom he registered in the social network. Again, the admin user sees the entire CRM within his social network, the others would have to be something like that [login to view URL] or / loginsales. 4.- Orderly and responsive code. The only and main idea at the moment is that each user of the social network enjoys the benefits of the built-in CRM, there will be many more modifications to the project, who will do this in time and order will surely work with many more modifications to the project. See the video [login to view URL]