When on the Message Board page, click on POST, then decide which category
you want your message to go in and click on ADD MESSAGE in that category.
Type your message and then decide how long you want the message to stay visible.
Complete your name and e-mail details as requested then click PREVIEW MESSAGE to make sure it's what you want.
If it is click SUBMIT and the message will appear on the MESSAGE BOARD.
If you want to change it, click on BACK and make the changes then click SUBMIT again.
Easy peasy, lemon squeezy.
On the MESSAGE BOARD page you can see the total number of messages left.
This number includes all messages that have timed out and are no longer visible.
Hope this clears up any confusion.