suite/maintenance_equipment_charge/views/maintenance_views.xml

<?xml version="1.0" encoding="UTF-8" ?>
<odoo>
    <record model="maintenance.equipment.charge.type" id="equipment_charge_other">
        <field name="name">Other</field>
    </record>

    <record model="ir.ui.view" id="hr_equipment_view_form_inherited">
        <field name="name">equipment.form.inherited</field>
        <field name="model">maintenance.equipment</field>
        <field name="inherit_id" ref="maintenance.hr_equipment_view_form"/>
        <field name="arch" type="xml">
            <xpath expr="//div[@name='button_box']" position="inside">
                <button name="action_open_charges"
                            type="object"
                            class="oe_stat_button"
                            icon="fa-dollar"
                            help="show the usage charges for equipment" >
                    <field string="Charges" name="charge_count" widget="statinfo"/>
                </button>
            </xpath>
        </field>
    </record>

    <!-- maintenance.equipment.charge : views -->
    <record id="hr_equipment_charge_view_search" model="ir.ui.view">
        <field name="name">equipment.charge.search</field>
        <field name="model">maintenance.equipment.charge</field>
        <field name="arch" type="xml">
            <search string="Equipment Charge Search">
                <field name="equipment_id"/>
                <field name="employee_id"/>
                <field name="department_id"/>
                <field name="type_id"/>
                <group expand="0" string="Group By">
                    <filter string="Charge Type" name="groupby_type_id" domain="[]" context="{'group_by':'type_id'}"/>
                    <filter string='Equipment' name="groupby_equipment_id" domain="[]" context="{'group_by': 'equipment_id'}"/>
                    <filter string='Employee' name="groupby_employee_id" domain="[]" context="{'group_by': 'employee_id'}"/>
                    <filter string='Department' name="groupby_department_id" domain="[]" context="{'group_by': 'department_id'}"/>
                </group>
            </search>
        </field>
    </record>

    <record id="hr_equipment_charge_view_form" model="ir.ui.view">
        <field name="name">equipment.charge.form</field>
        <field name="model">maintenance.equipment.charge</field>
        <field name="arch" type="xml">
            <form string="Equipment Charge Form">
                <header/>
                <sheet>
                    <group>
                        <group>
                            <field name="date"/>
                            <field name="equipment_id"/>
                            <field name="employee_id"/>
                            <field name="department_id"/>
                        </group>
                        <group name="charge_info" string="Charge">
                            <field name="type_id" widget="selection"/>
                            <label for="qty"/>
                            <div class="o_row" name="qty">
                                <field name="qty" nolabel="1"/>
                                <field name="uom_id" nolabel="1" readonly="1"/>
                            </div>
                            <field name="amount"/>
                            <field name="name"/>
                        </group>
                    </group>
                </sheet>
            </form>
        </field>
    </record>

    <record id="hr_equipment_charge_view_tree" model="ir.ui.view">
        <field name="name">equipment.charge.tree</field>
        <field name="model">maintenance.equipment.charge</field>
        <field name="arch" type="xml">
            <tree string="Equipment Charge">
                <field name="date"/>
                <field name="type_id"/>
                <field name="equipment_id"/>
                <field name="employee_id"/>
                <field name="department_id"/>
                <field name="qty"/>
                <field name="amount"/>
            </tree>
        </field>
    </record>

    <record id="hr_equipment_charge_view_graph" model="ir.ui.view">
        <field name="name">equipment.charge.graph</field>
        <field name="model">maintenance.equipment.charge</field>
        <field name="arch" type="xml">
            <graph string="Equipment Charge">
                <field name="type_id"/>
                <field name="equipment_id"/>
                <field name="amount"/>
            </graph>
        </field>
    </record>

    <record id="hr_equipment_charge_view_pivot" model="ir.ui.view">
        <field name="name">equipment.charge.pivot</field>
        <field name="model">maintenance.equipment.charge</field>
        <field name="arch" type="xml">
            <pivot string="Equipment Charge">
                <field name="type_id"/>
                <field name="equipment_id"/>
                <field name="amount"/>
            </pivot>
        </field>
    </record>

    <record id="hr_equipment_charge_view_calendar" model="ir.ui.view">
        <field name="name">equipment.charge.calendar</field>
        <field name="model">maintenance.equipment.charge</field>
        <field name="arch" type="xml">
            <calendar date_start="date" color="equipment_id">
                <field name="equipment_id"/>
                <field name="amount"/>
            </calendar>
        </field>
    </record>

    <!-- maintenance.equipment.charge : actions -->
    <record id="maintenance_charge_action_reports" model="ir.actions.act_window">
        <field name="name">Equipment Charges</field>
        <field name="res_model">maintenance.equipment.charge</field>
        <field name="view_mode">tree,form,graph,pivot,calendar</field>
        <field name="help" type="html">
            <p>
                No charges.
            </p>
        </field>
    </record>

    <menuitem
        id="maintenance_equipment_charge_reporting"
        action="maintenance_charge_action_reports"
        parent="maintenance.maintenance_reporting"/>

    <!-- maintenance.equipment.charge.type : views -->
    <record id="hr_equipment_charge_type_view_form" model="ir.ui.view">
        <field name="name">equipment.charge.type.form</field>
        <field name="model">maintenance.equipment.charge.type</field>
        <field name="arch" type="xml">
            <form string="Equipment Charge Type Form">
                <header/>
                <sheet>
                    <group>
                        <group>
                            <field name="name"/>
                            <field name="uom_id"/>
                        </group>
                    </group>
                </sheet>
            </form>
        </field>
    </record>

    <record id="hr_equipment_charge_type_view_tree" model="ir.ui.view">
        <field name="name">equipment.charge.type.tree</field>
        <field name="model">maintenance.equipment.charge.type</field>
        <field name="arch" type="xml">
            <tree string="Equipment Charge Type">
                <field name="name"/>
                <field name="uom_id"/>
            </tree>
        </field>
    </record>

    <!-- maintenance.equipment.charge.type : actions -->
    <record id="maintenance_charge_type_action" model="ir.actions.act_window">
        <field name="name">Equipment Charge Types</field>
        <field name="res_model">maintenance.equipment.charge.type</field>
        <field name="view_mode">tree,form</field>
    </record>

    <menuitem
        id="maintenance_equipment_charge_type"
        action="maintenance_charge_type_action"
        parent="maintenance.menu_maintenance_configuration"/>
</odoo>