Creating windows application

I am creating a windows application using .NET and new to this programming.

        I am working on a Stand alone application. I created a form which has got five buttons
 
1.Add a User
2.Add a Project.
3. Assign the project to a User.
4.Assign the User to a Project.
 
When I click on option '1'
 
A new page should open asking for additional information.

For example:

User Name :
Project name :

Can we have multiple forms in a single project.Also, Please suggest me what you would do to achieve this?

Thanks for your help