project-tools/project_funders/views/project_task_view.xml

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

    <record id="view_task_form2_inherit_project" model="ir.ui.view">
        <field name="name">project.task.view.form.inherit</field>
        <field name="model">project.task</field>
        <field name="inherit_id" ref="project.view_task_form2"/>
        <field name="arch" type="xml">
            <xpath expr="//notebook" position="inside">
                <page name="funders" string="Funder(s)">
                    <field name="funder_ids" context="{'default_task_id': active_id}">
                        <tree editable="bottom">
                            <field name="task_id" invisible="1"/>
                            <field name="partner_id"/>
                            <field name="amount"/>
                        </tree>
                    </field>
                    <group>
                        <group class="oe_subtotal_footer oe_right" name="project_hours">
                            <span>
                                <label class="font-weight-bold" for="amount_total" string="Total"/>
                            </span>
                            <field name="amount_total" nolabel="1"/>
                        </group>
                    </group>
                </page>
            </xpath>
        </field>
    </record>

    <record id="view_task_kanban_inherit_project_funders" model="ir.ui.view">
        <field name="name">project.task.view.kanban.inherit</field>
        <field name="model">project.task</field>
        <field name="inherit_id" ref="project.view_task_kanban"/>
        <field name="arch" type="xml">
            <field name="active" position="after">
                <field name="amount_total"/>
            </field>
            <field name="tag_ids" position="after">
                <span attrs="{'invisible': [('amount_total', '=', 0)]}">
                    Funds: <field name="amount_total"/>
                </span>
            </field>
        </field>
    </record>

</odoo>