To turn off the "From" byline setting on your board, follow these steps:
1. Log in to the account used to create the board and view the board.
2. Click the Appearance button with the paint roller icon in the upper left-hand side of the board.
3. Toggle off Include Contributor Name (blue is on, grey is off).
Note: This setting is board-wide, meaning that you can not shut the byline off on select posts, and the byline will be removed from all posts when this is toggled off. With that being said, you'll want to make sure that contributors add their names to the post itself if they don't want to post anonymously.
Note: This setting will also affect the byline in a printed book.
You can toggle this setting back on at any time.