hr_timesheet_view.xml

<openerp>
    <data>
        
         <record id="hr_timesheet_line_tree" model="ir.ui.view">
             <field name="name">hr.analytic.timesheet.tree</field>
             <field name="model">hr.analytic.timesheet</field>
             <field name="type">tree</field>
             <field name="inherit_id" ref="hr_timesheet.hr_timesheet_line_tree"/>
             <field name="arch" type="xml">
                 <field name="user_id" position="after">
                       <field name="department_id"/>
                 </field>
             </field>
         </record>
         
         <record id="hr_timesheet_line_form" model="ir.ui.view">
             <field name="name">hr.analytic.timesheet.form</field>
             <field name="model">hr.analytic.timesheet</field>
             <field name="type">form</field>
             <field name="inherit_id" ref="hr_timesheet.hr_timesheet_line_form"/>
             <field name="arch" type="xml">
                 <field name="date" position="after">
                       <field name="department_id"/>
                 </field>
             </field>
         </record>

         <record id="hr_timesheet_line_search" model="ir.ui.view">
             <field name="name">hr.analytic.timesheet.search</field>
             <field name="model">hr.analytic.timesheet</field>
             <field name="type">search</field>
             <field name="inherit_id" ref="hr_timesheet.hr_timesheet_line_search"/>
             <field name="arch" type="xml">
                 <field name="user_id" position="after">
                       <field name="department_id"/>
                 </field>
                 <xpath expr="/search/group/filter[@string='Users']" position="after">
                       <filter string="Department" icon="terp-folder-orange" domain="[]" context="{'group_by':'department_id'}"/>
                 </xpath>
             </field>

         </record>

    </data>
</openerp>