opening an interface after some event happen in windows form application

I've created an interface for registration. When user clicks on any event the window for that should appear in this form, else the windows should be hidden.

For example if you see the image that I've posted, suppose the user clicks on the admin then the registration form for admin should appear in the form.

if the user clicks on the student then the registration form for student should appear. Else all should be hidden, unless user clicks on some events.

also, at one time onlly one event should appear at the form.

How can I do this??

try googling a little.
Questions about opening forms have been asked before ... A lot

you can create a MDI app and loop through all child windows, closing all except the one that matches your selection