Follow these steps to add a Folder source to AutoFocus:

• Start the Add New Source wizard by pressing CTRL-N, selecting Add New... from the Sources menu or by pressing the Add New Source button in the Source panel's toolbar.

• Select "Folder" and press Next.

• Select the folder whose contents you want to make searchable in the folder tree or type its name in the text field above the tree. All files in the selected folder will be made searchable. When the "Include subfolders" checkbox is marked, files in subfolders (and subsubfolders, etc.) will also be made searchable.
  Note that it may take a short while before the tree shows any folders due to initialization of the tree.
  Press Next to continue.

• Specify the maximum size that the files to include may have. Any files larger than this size are ignored.
  By default this limit is set to "Unlimited", meaning that all files are accepted.
  Use this threshold when you have for example exceptionally large PDF files (in the order of tens of megabytes) on which AutoFocus freezes during scanning.
  Press Next to continue.

• Next you are requested to enter a name for the source. The name will be shown in the list of Sources as well as long search results, etc.
  Press Next to continue.

• Finally you see a screen telling you that you have successfully defined a new source. You may optionally start scanning the source. This is needed in order to be able to search and explore the files of this source. As an active scanning process blocks the entire user interface, you may also decide to switch this off (e.g. to define more new sources) and scan the sources later by hitting the Refresh button.
  Once you click the Next button, the source will become visible in the list in the Sources Panel and the scanning process may start, depending on the choice you have made.

Note that at any time except for the last step, you can press the Cancel button. No source will be added then.