suite/maintenance_usage/views/maintenance_views.xml

<?xml version="1.0" encoding="UTF-8" ?>
<odoo>
    <record model="ir.ui.view" id="hr_equipment_category_view_form_inherited">
        <field name="name">maintenance.equipment.category.inherited</field>
        <field name="model">maintenance.equipment.category</field>
        <field name="inherit_id" ref="maintenance.hr_equipment_category_view_form"/>
        <field name="arch" type="xml">
            <xpath expr="//field[@name='note']" position="before">
                <group>
                    <field name="usage_uom_id"/>
                </group>
            </xpath>
        </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="priority" eval="200"/>
        <field name="arch" type="xml">
            <xpath expr="//div[@name='button_box']" position="inside">
                <button name="action_open_usage_log"
                            type="object"
                            class="oe_stat_button"
                            icon="fa-tachometer"
                            help="show the usage logs for equipment" >
                    <field string="Usage" name="usage_count" widget="statinfo"/>
                </button>
            </xpath>
            <xpath expr="//form/sheet/group/group[1]" position="inside">
                <label for="usage_qty"/>
                <div class="o_row" name="usage">
                    <field name="usage_qty" nolabel="1"/>
                    <field name="usage_uom_id" nolabel="1" readonly="1"/>
                </div>
            </xpath>
            <xpath expr="//group[@name='maintenance']" position="inside">
                <field name="maintenance_usage"/>
            </xpath>
            <xpath expr="//field[@name='maintenance_team_id']" position="attributes">
                <attribute name="attrs">{'required': ['|', ('period', '!=', 0), ('maintenance_usage', '!=', 0)]}</attribute>
            </xpath>
        </field>
    </record>

    <!-- maintenance.usage.log : views -->
    <record id="hr_equipment_usage_log_view_search" model="ir.ui.view">
        <field name="name">equipment.usage.log.search</field>
        <field name="model">maintenance.usage.log</field>
        <field name="arch" type="xml">
            <search string="Equipment Usage Search">
                <field name="equipment_id"/>
                <field name="employee_id"/>
                <field name="department_id"/>
                <separator/>
                <group expand='0' string='Group by...'>
                    <filter name="equipment" string='Equipment' domain="[]" context="{'group_by': 'equipment_id'}"/>
                    <filter name="employee" string='Employee' domain="[]" context="{'group_by': 'employee_id'}"/>
                    <filter name="department" string='Department' domain="[]" context="{'group_by': 'department_id'}"/>
                </group>
            </search>
        </field>
    </record>

    <record id="hr_equipment_usage_log_view_form" model="ir.ui.view">
        <field name="name">equipment.usage.log.form</field>
        <field name="model">maintenance.usage.log</field>
        <field name="arch" type="xml">
            <form string="Equipment Usage Form">
                <header/>
                <sheet>
                    <group>
                        <group>
                            <field name="date"/>
                            <field name="equipment_id"/>
                            <field name="employee_id"/>
                            <field name="department_id"/>
                        </group>
                        <group name="usage_info" string="Usage">
                            <label for="qty"/>
                            <div class="o_row" name="usage">
                                <field name="qty" nolabel="1"/>
                                <field name="uom_id" nolabel="1" readonly="1"/>
                            </div>
                        </group>
                    </group>
                </sheet>
            </form>
        </field>
    </record>

    <record id="hr_equipment_usage_log_view_tree" model="ir.ui.view">
        <field name="name">equipment.usage.log.tree</field>
        <field name="model">maintenance.usage.log</field>
        <field name="arch" type="xml">
            <tree string="Equipment Usage">
                <field name="date"/>
                <field name="equipment_id"/>
                <field name="employee_id"/>
                <field name="department_id"/>
                <field name="qty"/>
                <field name="uom_id"/>
            </tree>
        </field>
    </record>

    <record id="hr_equipment_usage_log_view_graph" model="ir.ui.view">
        <field name="name">equipment.usage.log.graph</field>
        <field name="model">maintenance.usage.log</field>
        <field name="arch" type="xml">
            <graph string="Equipment Usage">
                <field name="equipment_id"/>
                <field name="qty"/>
            </graph>
        </field>
    </record>

    <record id="hr_equipment_usage_log_view_pivot" model="ir.ui.view">
        <field name="name">equipment.usage.log.pivot</field>
        <field name="model">maintenance.usage.log</field>
        <field name="arch" type="xml">
            <pivot string="Equipment Usage">
                <field name="equipment_id"/>
                <field name="qty"/>
            </pivot>
        </field>
    </record>

    <record id="hr_equipment_usage_log_view_calendar" model="ir.ui.view">
        <field name="name">equipment.usage.log.calendar</field>
        <field name="model">maintenance.usage.log</field>
        <field name="arch" type="xml">
            <calendar date_start="date" color="equipment_id">
                <field name="equipment_id"/>
                <field name="qty"/>
            </calendar>
        </field>
    </record>

    <!-- maintenance.usage.log : actions -->
    <record id="maintenance_usage_log_action_reports" model="ir.actions.act_window">
        <field name="name">Equipment Usage</field>
        <field name="res_model">maintenance.usage.log</field>
        <field name="view_mode">tree,form,graph,pivot,calendar</field>
        <field name="help" type="html">
            <p>
                No usage.
            </p>
        </field>
    </record>

    <menuitem
        id="maintenance_usage_reporting"
        action="maintenance_usage_log_action_reports"
        parent="maintenance.maintenance_reporting"/>
</odoo>