If the Use Recycle Bin radio item is selected, the files which are deleted are placed in the recycle bin (trashcan). You can at a later moment always open the recycle bin and restore your files, unless you've emptied the recycle bin manually.
If you want the files to go to an archive folder or to be deleted without recovery option, then select an other action.

Caution: When you analyse network drives, the "Recycle Bin" option does not work!