module settings

config.xml

<?xml version="1.0"?>
<config>
  <modules>
    <Mezzmer_HomeTryOn>
      <version>1.0.0</version>
    </Mezzmer_HomeTryOn>
  </modules>
  <global>
    <blocks>
      <!-- Block Section -->
    </blocks>
    <models>
    <home_try_on>
      <class>Mezzmer_HomeTryOn_Sales_Model</class>
    </home_try_on>
    <sales>
      <rewrite>
        <quote>Mezzmer_HomeTryOn_Sales_Model_Quote</quote>
        <quote_item>Mezzmer_HomeTryOn_Sales_Model_Quote_Item</quote_item>
        <quote_address_item>Mezzmer_HomeTryOn_Sales_Model_Quote_Address_Item</quote_address_item>
      </rewrite>
    </sales>
    </models>
    <resources>
      <home_try_on_setup>
        <setup>
          <module>Mezzmer_HomeTryOn</module>
        </setup>
        <connection>
          <use>core_setup</use>
        </connection>
      </home_try_on_setup>
      <home_try_on_write>
        <connection>
          <use>core_write</use>
        </connection>
      </home_try_on_write>
      <home_try_on_read>
        <connection>
          <use>core_read</use>
        </connection>
      </home_try_on_read>
    </resources>
  </global>
</config>