How to Create sub projects in Main project

Question

Hi,

 

I want to create a New web application. In this New Web Application different Sub web applications need to create. In above screen Project1, Project 2, Project 3, Project 4 available. Suppose In Main Application If Project 1 menu clicked by user display submenus of Project 1 and If Project 2 menu clicked by user display submenus of Project 2 ,etc..

 

One more requirement:

Suppose some problems happens in Project 1 Main Application don't need to stop.

Remaining what ever menu tabs available work those properly.

 

 How to do in .NET MVC