Open the Properties Window (NOT the right-click on the set-up project)
Use the toolbar View -> Properties Window
VS 2013/2017 on windows 7:
Keyboard shortcut F4
VS 2010 on windows 7:
Keyboard shortcut sequence Ctrl + W and then Ctrl + P
Now select your set-up project in the Solution Explorer window, the Properties window should populate with the info (e.g. author, language, program title etc.) that you can edit