The application wizard allows you to easily create a new application : Models, Fields and Field groups, App Desk, Launchers, URL enhancers...
The application wizard allows you to skip repetitive tasks and focus on what is important.
The last step of the application wizard is table and files generation. This files will be in a new folder (which name you have chosen) is local/application/. Therefore, Novius OS (user Apache if Novius OS runs on a Apache) has to have write rights on this folder.