account_view.xml

<openerp>
  <data>

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

    <record id="invoice_followup_form_view" model="ir.ui.view">
      <field name="name">invoice.followup.form.view</field>
      <field name="model">account.invoice</field>
      <field name="inherit_id" ref="account.invoice_form" />
      <field name="arch" type="xml">
        <notebook position="inside">
          <page string="Credit Control"
            groups="account_credit_control.group_account_credit_control_manager,account_credit_control.group_account_credit_control_user,account_credit_control.group_account_credit_control_info">
            <group>
              <field name="credit_policy_id" widget="selection"
                string="Manual Credit Control Policy"
                attrs="{'invisible': [('credit_policy_id', '=', False)]}"
                groups="account_credit_control.group_account_credit_control_manager,account_credit_control.group_account_credit_control_user,account_credit_control.group_account_credit_control_info"/>
            </group>
            <separator string="Issued Lines" colspan="4"/>
            <field name="credit_control_line_ids" colspan="4" nolabel="1"
              groups="account_credit_control.group_account_credit_control_manager,account_credit_control.group_account_credit_control_user,account_credit_control.group_account_credit_control_info" >
              <tree string="Credit Control Lines">
                <field name="date"/>
                <field name="level"/>
                <field name="state"/>
                <field name="channel"/>
                <field name="balance_due"/>
                <field name="policy_level_id"/>
                <field name="policy_id"/>
              </tree>
            </field>
          </page>
        </notebook>
      </field>
    </record>

  </data>
</openerp>