Step 1  .py file:

name = fields.Char('Description')
display_type = fields.Selection(
    selection=[
        ('line_section', "Section"),
    ],
    default=False)

@api.model
def create(self, vals_list):
    if vals_list.get('display_type'):
        vals_list.update(product_id=False, qty=0)
    return super().create(vals_list)

Step 2 .xml file:

<field name="parts_ids" widget="section_and_note_one2many" mode="tree"
       context="{'default_display_type': False}">
    <tree editable="bottom">
        <control>
            <create string="Add Line"/>
            <create name="add_section_control"
                    string="Add a section"
                    context="{'default_display_type':'line_section'}"/>
        </control>
        <field name="product_id" domain="[('sparce_part', '=', True)]"
               required="not display_type"/>
        <field name="display_type" column_invisible="1"/>
	​</tree>
</field>

Add that display_type field in your O2M field as an invisible.

Hope it's helps you.