Once you have found the visitor, click on the Message button to the right of the visitor in question's details to setup and maintain the message and view the log of messages sent.
After clicking on the Message button, the Maintain Messages window will appear that allows you to enter a message, set the period that you want the message to be displayed for, and view the message log.
Note: There are two separate sections of the maintain messages window. Use the individual message section to set up an individual message to a specific person. For information on setting up a message to broadcast to all visitors, please see the Broadcast Message article.
Enter the message that you want to be displayed into the text box. The text box holds the individual message that the visitor will be shown.
Set the period in which you want the message to be shown by clicking the 'Show From' and 'Show To' date selector fields and selecting dates. The individual message will be shown between the shown from and to dates.
When the check box 'Show Only Once' is checked, the message will only be shown once between the shown from and to dates.
The text box below the from and to date is a description of the date range the message is shown and who it is shown to.
The 'Message Log' shows all message that have been shown to the visitor, the date shown and their response.
Close out of the window to save the changes.