On Windows desktop, right click inside the Notezilla memo board (bottom area) where you have all your sticky notes, and choose 'Arrange notes' to sort your notes.
You can also click on the column headers (Title, Date Modified etc) from the top notes list to sort the notes in ascending/descending order.
Watch this short video for more clarity:
https://youtube.com/shorts/PRxBDtA8-5I?feature=share