By default, you can manually arrange the notes contained in your database, by simply dragging the selected item to the location desired.
You can also choose sort your notes by name or modification date.
To sort the notes and folders in a folder, select that folder then select Sort Notes > By Date or Sort Notes > By Name from the File menu.
To sort all the notes and folders in the current database, unselect any item in the list of notes then select Sort Notes > By Date or Sort Notes > By Name from the File menu.