odoo/addons/hr/hr_department_view.xml

<?xml version='1.0'?>
<terp>
    <data>
        
        <!--
	======================
	department
	======================
	-->
        <record id='view_department_form' model='ir.ui.view'>
            <field name='name'>hr.department.form</field>
            <field name='model'>hr.department</field>
            <field name='type'>form</field>
            <field name='arch' type='xml'>
                <form string='department'>
                    <notebook>
                        <page string='Department'>
                            <field name='name' colspan='4' select='1'/>
                            <field name='company_id' select='1'/>
                            <field name='parent_id' select='2'/>
                            <field name='manager_id' select='1' colspan='4'/>
                            <field name='member_ids' colspan='4'/>
                        </page>
                        <page string='Notes'>
                            <field name='note' nolabel='1' colspan='4'/>
                        </page>
                    </notebook>
                </form>
            </field>
        </record>
        <record id='view_department_tree' model='ir.ui.view'>
            <field name='name'>hr.department.tree</field>
            <field name='model'>hr.department</field>
            <field name='type'>tree</field>
            <field name='field_parent'>child_ids</field>
            <field name='arch' type='xml'>
                <tree string='Companies'>
                    <field name='name'/>
                    <field name='company_id'/>
                    <field name='manager_id'/>
                </tree>
            </field>
        </record>
        <record id='open_module_tree_department_tree' model='ir.actions.act_window'>
            <field name='name'>Departments</field>
            <field name='res_model'>hr.department</field>
            <field name='view_type'>tree</field>
            <field name='domain'>[('parent_id','=',False)]</field>
        </record>
        <menuitem name='Administration/Users/Departments Structure' action='open_module_tree_department_tree' id='menu_department_tree'/>
        
        <record id='open_module_tree_department' model='ir.actions.act_window'>
            <field name='name'>Departments</field>
            <field name='res_model'>hr.department</field>
            <field name='view_type'>form</field>
        </record>
        
        <menuitem name='Administration/Users/Departments Structure/Define Departments' action='open_module_tree_department' id='menu_department_def'/>
        
    </data>
</terp>