One way to move the Notezilla sticky note from the desktop to a memo board is using the top left button over a sticky note. Clicking on it will show a menu with 'Stick to memo board' option. This will move the note to the selected memo board.
If you then wish to completely remove it from desktop then use the "Stick To Desktop" option from the same menu.
To move Notezilla the sticky note from one memo board to another, choose the note from the list and just drag and drop it in the required memo board. See the video in the below link to know how to move notes.
The above article will tell how to duplicate a note. However, if you don't hold the Ctrl key then it will move the note instead of duplicating it.
Please note in order to multi-select, hold the CTRL key and select your notes.
Also, press CTRL+A key in order to select all your notes.