account-financial-reporting/customer_activity_statement/wizard/customer_activity_statement_wizard.xml

<?xml version="1.0" encoding="utf-8"?>
<openerp>
    <data>
        <!-- wizard action on res.partner -->
        <act_window id="customer_activity_statement_wizard_action"
            name="Customer Activity Statement"
            src_model="res.partner"
            res_model="customer.activity.statement.wizard"
            view_type="form" view_mode="form"
            key2="client_action_multi" target="new"
            groups="account.group_account_user"/>

        <!-- wizard view -->
        <record id="customer_activity_statement_wizard_view" model="ir.ui.view">
            <field name="name">Customer Activity Statement Wizard</field>
            <field name="model">customer.activity.statement.wizard</field>
            <field name="arch" type="xml">
                <form name="Report Options">
                    <div style="text-align:justify">
                    <label string="The activity statement provides details of all activity on
            the customer receivables between two selected dates. This includes all invoices,
            refunds and payments. Any outstanding balance dated prior to the chosen statement
            period will appear as a forward balance at the top of the statement. The list is
            displayed in chronological order and is split by currencies."/><br/><br/>
                    <label string="Aging details can be shown in the report, expressed in aging
            buckets (30 days due, ...), so the customer can review how much is open, due or overdue."/>
                    </div><hr/>
                    <group name="main_info">
                        <field name="company_id" options="{'no_create': True}" groups="base.group_multi_company"/>
                    </group>
                    <group name="dates">
                        <field name="date_start"/>
                        <field name="date_end"/>
                    </group>
                    <group name="aging_report">
                        <field name="show_aging_buckets"/>
                    </group>
                    <group name="multiple_partners">
                        <field name="number_partner_ids" readonly="1" invisible="1"/>
                        <field name="filter_partners_non_due" attrs="{'invisible': [('number_partner_ids', '=', 1)]}"/>
                    </group>
                    <footer>
                        <button name="button_export_pdf" string="Export PDF" type="object" default_focus="1" class="oe_highlight"/>
                        or
                        <button string="Cancel" class="oe_link" special="cancel" />
                    </footer>
                </form>
            </field>
        </record>
    </data>
</openerp>