crm_activity_report_views.xml

<?xml version="1.0" encoding="utf-8"?>
<odoo>

        <record id="crm_activity_report_view_graph" model="ir.ui.view">
            <field name="name">crm.activity.report.graph</field>
            <field name="model">crm.activity.report</field>
            <field name="arch" type="xml">
                <graph string="Activities Analysis" stacked="True">
                    <field name="mail_activity_type_id" type="col"/>
                    <field name="date" interval="month" type="row"/>
                </graph>
            </field>
        </record>

        <record id="crm_activity_report_view_pivot" model="ir.ui.view">
            <field name="name">crm.activity.report.pivot</field>
            <field name="model">crm.activity.report</field>
            <field name="arch" type="xml">
                <pivot string="Activities Analysis" disable_linking="True">
                    <field name="mail_activity_type_id" type="col"/>
                    <field name="date" interval="month" type="row"/>
                </pivot>
            </field>
        </record>

        <record id="crm_activity_report_view_search" model="ir.ui.view">
            <field name="name">crm.activity.report.search</field>
            <field name="model">crm.activity.report</field>
            <field name="arch" type="xml">
                <search string="Activities Analysis">
                    <filter string="My Activities" name="activities_my" domain="[('user_id', '=', uid)]"/>
                    <separator/>
                    <filter name="lead" string="Leads" domain="[('lead_type','=', 'lead')]" help="Show only lead"/>
                    <filter name="opportunity" string="Opportunities" domain="[('lead_type','=','opportunity')]" help="Show only opportunity"/>
                    <separator/>
                    <filter string="Won" name="won"
                            domain="['&amp;', ('stage_id.probability', '=', 100), ('stage_id.on_change', '=', 1)]"/>
                    <separator/>
                    <filter string="Date" name="this_month" date="date" default_period="this_month"/>
                    <field name="team_id" context="{'invisible_team': False}"/>
                    <field name="author_id" string="Created By"/>
                    <group expand="1" string="Group By">
                        <filter string="Created By" name="group_by_salesperson" context="{'group_by':'author_id'}"/>
                        <filter string="Sales Channel" name="saleschannel" context="{'group_by':'team_id'}"/>
                        <filter string="Country" name="country" context="{'group_by':'country_id'}" />
                        <filter string="Company" name="company" context="{'group_by':'company_id'}" groups="base.group_multi_company"/>
                        <filter string="Stage" name="stage" context="{'group_by':'stage_id'}"/>
                        <filter string="Date" context="{'group_by':'date:month'}" name="month"/>
                        <filter string="Leads" name="group_by_opportunity" context="{'group_by':'lead_id'}" />
                    </group>
                </search>
            </field>
        </record>

       <record id="crm_activity_report_action" model="ir.actions.act_window">
           <field name="name">Activities Analysis</field>
           <field name="res_model">crm.activity.report</field>
           <field name="view_type">form</field>
           <field name="view_mode">graph,pivot</field>
           <field name="context">{'search_default_activities_my': True}</field>
           <field name="domain">[]</field>
       </record>

       <menuitem
            id="crm_activity_report_menu"
            name="Activities"
            groups="sales_team.group_sale_manager"
            parent="crm_menu_report"
            action="crm_activity_report_action"
            sequence="6"/>

       <record id="crm_activity_report_action_team" model="ir.actions.act_window">
           <field name="name">Activities Analysis</field>
           <field name="res_model">crm.activity.report</field>
           <field name="view_type">form</field>
           <field name="view_mode">graph,pivot</field>
           <field name="context">{'search_default_team_id': active_id}</field>
           <field name="domain">[]</field>
       </record>

</odoo>