You can activate the navigation panel using View->Navigation panel menu command.

You can perform the following operations in the navigation panel by right clicking the image or by pressing on a menu icon ():

Select all command marks all images in the folder.

Unselect all command clears all marks, none of images becomes selected.

Invert selected command changes a state of the image to the opposite (selected->unselected, unselected->selected). 

Command Add selected to queue images adds marked images to the queue with the current settings.

Rename selected command  lets you rename one or a group of files using template. For example, you can rename all your files this way: "2005.06.25-The Beach (13)", so that your files are always shown sorted by date.

Copy selected command copies the marked files to the selected folder.

Move selected command moves the marked files to the selected folder.

Delete selected command moves the marked files to the trash-bin.

Lossless rotate commands rotate the image and save it with the original date and time. The operation is lossless so JPEG quality does not deteriorates. RAW files cannot be rotated by this function.

Auto rotate (lossless) command analyzes the image and tries to define its orientation. The command  assumes that the upper part of the image should be brighter than the bottom part. The program checks only images in original "landscape" orientation and ignores already rotated images.

Refresh list command updates the thumbnails and can be useful if you delete or rename files outside of the program manually.

Recent folders  command (available from a navigation panel toolbar ) remembers the list of last folders from which the image was open.

Folder tree  command (available from a navigation panel toolbar ) opens a list with a folder tree so you can see where you are located now and choose another folder.

Parent folder  command (available from a navigation panel toolbar ) lets you jump to the parent folder. All marks in the current folder will be lost.