• Attribute longitude is the field of longitude in your model (if you not have custom field for this please don't change, because all model has default field named 'longitude' )
• Attribute latitude is the field of latitude in your model (if you not have custom field for this please don't change, because all model has default field named 'latitude' )
• WARNING : Don't change the attribute name and widget in any model

                
<record id="view_id" model="ir.ui.view">

    <field name="name">view.name</field>

    <field name="model">your.model</field>

    <field name="inherit_id" ref="your_model.view_view_id"/>

    <field name="arch" type="xml">

        <xpath expr="//field[@name='website']" position="after">

            <field name="coordinates" 

                   longitude="longitude" 

                   latitude="latitude" 

                   widget="coridnation_field"/>

        </xpath>

    </field>

</record>