Building a package using source files is the third step of the process described on our Packaging Software for Deployment guide.

1. Launch Composer (in your Casper Suite folder) and enter credentials for an administrative account on your Mac.
2. Select the source in the sidebar of the Composer window.
3. Click Build as DMG or Build as PKG.
   (Which should I pick, and why?)
4. Indicate where to save the result, then click Save.