Hi. Go to Project -> Tasks, turn on the List view and then use Advanced filters (e.g Ending date) to filter the information.

You can use either _order in your python file by inheriting the project.task model or by adding the default_order attribute by inheriting the tree view in your xml file.

in .py file:

class task(models.Model):
    _inherit = 'project.task'
    _order = 'date_start desc'

in xml file:

<record id="view_task_tree2_inherited" model="ir.ui.view">
            <field name="name">view.task.tree2.inherited</field>
            <field name="model">project.task</field>
            <field name="inherit_id" ref="project.view_task_tree2"/>
            <field name="arch" type="xml">
            	<tree position="attributes">
            		<attribute name="default_order">date_start desc</attribute>
            	</tree>
                
            </field>
        </record>