One solution to add positions directly to the database via phpmyadmin would work but cannot be administrated through backend:
see this thread for reference:http://forum.joomla.org/index.php/topic,24471.0.html
another suggested solution is the following and incredibly easy:
reference thread is here: http://forum.joomla.org/index.php/topic,53438.msg330990.html#msg330990
I was looking for the same and I found out this:
First I tried adding "id" records directly inside the database (jos_template_positions) but I couldn't administrate them through the control panel but then I found out that going to administrator\components\com_templates and opening admin.templates.html.php
In line 357 you have this:
Code:
function editPositions( &$positions, $option ) {
global $adminLanguage;
$rows = 25;
$cols = 2;
$n = $rows * $cols;
?>
If you modify the rows value you can have more forms. You just have to increment this value and then fill the forms, save it and it will add more records into the table.