When you open a new project, you'll get the above menu. 

It is always possible to retrieve a saved project   or to create a new project    by clicking on one of these icons.

The projects are saved  with the file extension .CDK. Each project file holds the disc data ( ISO image or audio tracks) as well as the disc and package labels.

i-Studio saves the .CDK projects into a folder named "CD-Click Projects" which is hosted in the "My Documents" folder.

You can choose the type of media  (CD, DVD o Blu-Ray) and its shape. The media shape options are:

Standard: Standard 120mm disc applicable to all media;
Mini: 80mm Mini disc  applicable to all media;
Biz-Card: Rectangular disc available only as CD or DVD (Blu-Ray not available).

The "Max Disc Size" window shows the chosen disc capacity in Mbytes. 

To make your project easier to retrieve, you can add a comment in the specific window. 

To continue, click on the   button and create the disc label.