eiru_service/wizard/budget_wizard.xml

<?xml version="1.0"?>
<openerp>
    <data>
        <record model="ir.ui.view" id="project_service_budget_wizard_view">
            <field name="name">project.service.budget.wizard.form</field>
            <field name="model">project.service.budget.wizard</field>
            <field name="arch" type="xml">
                <form string="Budget">
                    <group>
                        <group>
                            <field name='task_id' string="Tarea" invisible="1"/>
                            <field name='user_id' string="Funcionario" readonly="1"/>
                        </group>
                        <group>
                            <field name='date' string="Fecha" readonly="1"/>
                            <field name='amount' string="Monto" readonly="1"/>
                        </group>                        
                    </group>
                <footer>
                    <button name="add_budget" type="object" class="oe_highlight" string="Aceptar"/>
                </footer>
                </form>
            </field>
        </record>

        <record model="ir.actions.act_window" id="action_budget_add">
            <field name="name">Enviar Presupuesto</field>
            <field name="res_model">project.service.budget.wizard</field>
            <field name="view_type">form</field>
            <field name="view_mode">form</field>
            <field name="target">new</field>
        </record>
    </data>
</openerp>