Hello, I do not understand much about the xml this is my xml file,

<odoo>
  <data>
    <!-- explicit list view definition -->
    <record model="ir.ui.view" id="modulo2.list">
      <field name="name">modulo2 list</field>
      <field name="model">modulo2.modulo2</field>
      <field name="view_mode">tree,form</field>
      <field name="arch" type="xml">
        <tree>
          <field name="name"/>
          <field name="anioNacimiento"/>
          <field name="edad"/>
        </tree>
        <form>
   <sheet string="modulo2.modulo2">
      <group col="4">
         <field name="edad" modifiers="{'readonly': true}"/>
         <field name="name" on_change="1" modifiers="{}"/>
         <field name="anioNacimiento" on_change="1" modifiers="{'readonly': true}"/>
         <field name="newPerson" modifiers="{}" invisible="1"/>
         <separator/>
      </group>
   </sheet>
</form>
      </field>
    </record>


    <!-- actions opening views on models -->

    <record model="ir.actions.act_window" id="modulo2.action_window">
      <field name="name">modulo2 prueba </field>
      <field name="res_model">modulo2.modulo2</field>
      <field name="view_mode">tree,form</field>
    </record>


    <!-- server action to the one above -->



    <!-- Top menu item -->

    <menuitem name="modulo2" id="modulo2.menu_root"/>

    <!-- menu categories -->

    <menuitem name="Menu" id="modulo2.menu_1" parent="modulo2.menu_root"/>

    <!-- actions -->

    <menuitem name="Personas" id="modulo2.menu_1_list" parent="modulo2.menu_1"
              action="modulo2.action_window"/>
  </data>
</odoo>

which part should I modify ?, I would also like to edit the form that appears when the button is given to create, but I have not managed to do it, I have tried many forms, but I do not finish achieve it, if you could help me it would be great, thank you very much

Just declare the field in the .py file and use attrs in the xml file

like

newPerson = fields.Selection([('yes', 'Yes'), ('no', 'No')], string='Nueva Persona (Si/No)')
nombre = fields.Char(string="Nombre")

instead of

newPerson = fields.Selection([('yes', 'Yes'), ('no', 'No')], string='Nueva Persona (Si/No)')

    if newPerson == 'yes':
        nombre = fields.Char(string="Nombre")
    else:
        nombre = fields.Char(string="Nombre", required=True)

and in your xml file, when you declare your filed nombre, use attrs like

<field name="nombre" attrs="{'invisible':[('newPerson', '=', 'no')], 'required':[('newPerson', '=', 'yes')]}" />