odoo/addons/purchase/res_config_view.xml

<openerp>
    <data>

        <record id="view_purchase_configuration" model="ir.ui.view">
            <field name="name">Purchase Application</field>
            <field name="model">purchase.configuration</field>
            <field name="type">form</field>
            <field name="arch" type="xml">
            <form string="Purchase Application">
	            <separator string="Default Invoicing Control" colspan="4"/>
	            <group  colspan="2" col="4">
	                <field name="default_invoice_method" />
	            </group>

	            <separator string="Purchase Order" colspan="4"/>
	            <group colspan="4" col="8" name="Purchase_order">
	                <group  colspan="4" col="4">
	                   <field name="group_purchase_pricelist_per_supplier"/>
	                   <newline/>
	                   <group col="2" colspan="1">
                           <field name="tax_policy" on_change="onchange_tax_policy(tax_policy)"/>
                       </group>
                       <field name="group_purchase_taxes_global_on_order" invisible="1"/>
                       <field name="group_purchase_taxes_on_order_line" invisible="1"/>
	                   <newline/>
	                   <field name="module_warning"/>
	                   <newline/>
	                   <field name="module_purchase_analytic_plans"/>
	                   <newline/>
	                </group>
	                <group colspan="4" col="4">
	                    <newline/>
	                    <field name="group_sale_uom_per_product"/>
	                    <newline/>
	                    <field name="module_purchase_double_validation"/>
	                    <newline/>
	                    <field name="module_purchase_requisition"/>
	                    <newline/>
	                </group>
	            </group>

	            <separator string="Products" colspan="4"/>
                <group  colspan="4" col="4">
                    <field name="module_product_manufacturer"/>
                </group>
            </form>
            </field>
        </record>

        <record id="action_purchase_configuration" model="ir.actions.act_window">
            <field name="name">Configure Purchase Application</field>
            <field name="type">ir.actions.act_window</field>
            <field name="res_model">purchase.configuration</field>
            <field name="view_id" ref="view_purchase_configuration"/>
            <field name="view_type">form</field>
            <field name="view_mode">form</field>
        </record>

        <menuitem id="menu_purchse_config" name="Purchase" parent="base.menu_config" sequence="1" action="action_purchase_configuration"/>

    </data>
</openerp>