The main screen consist of target folder (Folder?:), destination file (Save To:), make button (MAKE), switching to individual file (File Mode) and advance option ( the '...' image).
Folder?:

Save To:
This is the destination .EXE of your archive. Click on this button will prompt 'File Select Dialog' where you can choose destination location.
File Mode:
This is where you can switch from Folder to an individual (single) file to archive. If you have a very large MS PowerPoint files or MS Access database file, you can select it individually by tick on this option.

MAKE:
When you ready with the target folder or file and output destination location, you can click on this button to start packing it.