partner_view.xml

<openerp>
  <data>
    <record id="partner_followup_form_view" model="ir.ui.view">
      <field name="name">partner.credit_control.form.view</field>
      <field name="model">res.partner</field>
      <field name="inherit_id" ref="account.view_partner_property_form" />
      <field name="arch" type="xml">
        <field name="credit_limit" position="after">
          <field name="credit_policy_id" widget="selection"
            groups="account_credit_control.group_account_credit_control_manager,account_credit_control.group_account_credit_control_use"/>
        </field>
      </field>
    </record>

    <act_window
      id="act_partner_credit_relation_relation"
      name="Credit Lines"
      groups="account_credit_control.group_account_credit_control_manager,account_credit_control.group_account_credit_control_user"
      domain="[('partner_id', '=',  active_id)]"
      res_model="credit.control.line"
      src_model="res.partner"/>

  </data>
</openerp>