Select Tools -> Options from the main menu.

EZ-Scan comes with 3 Generic Export formats, and many specific custom exports. They are as follows:
Generic
Custom
Choose the format from the drop down list. This will set the selected export as you default export. When you click on the 'Export' button on the right of the main screen, or click the 'Export' icon from the toolbar, this export will be run. The other exports will be available from File>Export> from the main menu.
If the current export has any custom settings to configure, you can set them by clicking the configure button. The settings screen that is shown will vary depending on the export chosen.
This will be the directory that the export file will be written to, when exporting data. You can use the browse button to select the export directory. This is optional. You can check the 'Prompt for path when exporting' option to let the user enter the Export path when exporting.
If you enter an export path but don't check the 'Prompt for path when exporting' option, the user will not be able to change the export path when exporting.
EZ-Scan can automatically generate a filename for you if this option is checked. This is not available for all exports.
If you enter a file name here, it will be used every time that the export is run. You can leave this blank and check the 'Prompt user for filename when exporting' option to let the user set the file name when exporting. Once again if you specify a file name here and don't check the 'Prompt user for filename when exporting' option, the user will not be able to edit the filename when exporting.
This will prompt the user to export data from the current batch before starting a new one. Simply a reminder for the user.