How to use Entity Framework for Multiple View

Question

Im too much confused about How to use Entity Framework for single View/Form

 

Another important question is that , should i create Entity Framework file (.edmx) every time when creating another form .

 

Please provide me solution that i should create Multiple .edmx file for different form(Insert data) or withing one .edmx file i can perform every CRUD operation within whole project

 

Thanks ....