trytond-product_cost_plan/view/cost_plan_form.xml

<?xml version="1.0"?>
<!-- The COPYRIGHT file at the top level of this repository contains the full
     copyright notices and license terms. -->
<form string="Product Cost Plan" col="6" cursor="product">
    <label name="number"/>
    <field name="number"/>
    <label name="active"/>
    <field name="active"/>
    <newline/>
    <label name="product"/>
    <field name="product"/>
    <label name="bom"/>
    <field name="bom"/>
    <notebook colspan="6">
        <page string="General" id="general">
            <field name="products" colspan="4"/>
            <label name="product_cost"/>
            <field name="product_cost"/>
        </page>
        <page id="costs" string="Costs">
            <field name="costs" colspan="4"/>
        </page>
        <page string="BOM Configuration" id="configuration">
            <field name="boms" colspan="4"/>
        </page>
    </notebook>
    <label name="cost_price"/>
    <field name="cost_price"/>
    <newline/>
    <group id="state" colspan="6">
        <label name="state"/>
        <field name="state"/>
        <group id="buttons" colspan="2">
            <button name="compute" string="Compute"/>
            <button name="reset" string="Reset"/>
        </group>
    </group>
</form>