<calendar date_start="date_deadline" string="Tasks" mode="month" color="stage_id" event_limit="5" hide_time="true" event_open_popup="true" quick_create="0" show_unusual_days="True" js_class="project_task_calendar" scales="day,week,month,year">
                    <field name="allow_milestones" invisible="1"/>
                    <field name="project_id" widget="project" invisible="context.get('default_project_id', False)"/>
                    <field name="display_in_project" invisible="1"/>
                    <field name="subtask_count" invisible="1"/>
                    <field name="milestone_id" invisible="not allow_milestones or not milestone_id"/>
                    <field name="user_ids" widget="many2many_avatar_user" invisible="not user_ids"/>
                    <field name="partner_id" invisible="not partner_id"/>
                    <field name="priority" widget="priority"/>
                    <field name="tag_ids" widget="many2many_tags" options="{'color_field': 'color'}" invisible="not tag_ids"/>
                    <field name="stage_id" invisible="not project_id or not stage_id" widget="task_stage_with_state_selection"/>
                    <field name="personal_stage_id" string="Personal Stage" options="{'no_open': True}" invisible="project_id or not personal_stage_id"/>
                    <field name="task_properties" invisible="not task_properties"/>
                </calendar>