All whiteboard sticky notes are 100% editable.
Open the Whiteboard sticky note you would like to edit by double clicking on it.
Click on the Select button located at the bottom of the Whiteboard to move any objects around the Whiteboard.
To move a Text Box, after clicking the selection tool and drag it to its new position.
Whiteboards have an infinite canvas and you can drag the text to any position.
Once you are done, click anywhere else on the whiteboard to unselect the Text Box.