When you select Scan For Assets, a hierarchical folder view is displayed, much like the one shown for My computer.

Since you are selecting folders rather than files to be scanned, the media files and project files contained in the folders are not shown. A checkbox appears next to each name in the folder tree, and four pop-up lists are offered on the toolbar.

These lists offer a menu of file types to import in each category: Video, Photo, Audio and Projects. By default, the file extensions on each menu are all checked, meaning that all the appearing file types will be included in the import operation. Uncheck the file extensions for any types that you do not wish to import.

To start importing, mark all the folders from which you want to import files. Use the file-type lists just discussed to narrow the range of incoming file types, if desired.

When selections have been made, click the Scan and Import button. This will import all files of the selected types in the chosen directories.