Drupal 7 - FAPI - Multistep form - with add another option
When you want to add a new set of values, you have to build the form in a different way - the fields that should be "multiplicated" have to be in an array.

so, your 

$form['Name'] = array(
        '#title' =&gt; t('Name'),
        '#type' =&gt; 'textfield',


should instead look like this :

$form['step2'][$i]['Name'] = array( ...


where $i is set to zero in the begining and increased by the callback for your "add another" button. The "step2" fieldset is there just to help you distinguish the parts that are repeated from the others - its not necessary i guess. 
The aformentioned examples module has nice examples how to acheive that even with ajax, so you dont have to reload the whole thing. Dont forget to set 

$form['#tree'] = TRUE;


so that you can process the several sets of results.