Add an additional field for the user

The software doesn't support that functionality directly but you could do it with some PHP code. Use this (or something similar) where $record['createdByUserNum'] is defined. Note that if your variable is called $pageRecord you'll need to rename $record to that in this code:

<?php // load user
$query = "SELECT * FROM {$TABLE_PREFIX}accounts WHERE num = '{$record['createdByUserNum']}'";
$result = mysql_query($query) or die("MySQL Error: ". htmlspecialchars(mysql_error()) . "\n");
$createdByUserRecord = mysql_fetch_assoc($result);
?>

Then you can display user fields like this:

<?php echo $createdByUserRecord['fullname'] ?>

And list all the user fields (for testing) like this:

<xmp><?php print_r($createdByUserRecord); ?></xmp>

Hope that helps! :)