Hi,

You need to make sure your model uses the context default when creating:

class YourModel(models.Model):

    _name = "your.model"

    _description = "Your Model"

    display_type = fields.Selection([

        ('', 'Normal Line'),

        ('line_section', 'Section'),

        ('line_note', 'Note'),

    ], string="Display Type", default='')

    @api.model

    def create(self, vals):

        if not vals.get('display_type'):

            vals['display_type'] = self._context.get('default_display_type', '')

        return super().create(vals)

XML:

<field name="display_type"/>

    <control>

        <create name="add_product_control"

                string="Add field"

                context="{'default_display_type': ''}"/>

        <create name="add_section_control"

                string="Add a section"

                context="{'default_display_type': 'line_section'}"/>

        <create name="add_note_control"

                string="Add a note"

                context="{'default_display_type': 'line_note'}"/>

    </control>

Hope it helps.