flectra/addons/website_event/views/event_views.xml

<?xml version="1.0" encoding="utf-8"?>
<flectra>

    <record id="event_type_view_form_inherit_website" model="ir.ui.view">
        <field name="name">event.type.view.form.inherit.website</field>
        <field name="model">event.type</field>
        <field name="inherit_id" ref="event.view_event_type_form"/>
        <field name="arch" type="xml">
            <div name="event_type_visibility_seats" position="after">
                <div class="col-xs-12 col-md-6 o_setting_box" name="event_type_visibility_website">
                    <div class="o_setting_left_pane">
                        <field name="website_menu"/>
                    </div>
                    <div class="o_setting_right_pane">
                        <label for="website_menu"/>
                        <div class="row">
                            <div class="col-md-8 mt16 text-muted">
                                Check this option to have menus for your event on the
                                website: registrations, schedule, map, ...
                            </div>
                        </div>
                    </div>
                </div>
            </div>
        </field>
    </record>

    <record id="event_event_view_form_inherit_website" model="ir.ui.view">
        <field name="name">event.event.view.form.inherit.website</field>
        <field name="model">event.event</field>
        <field name="inherit_id" ref="event.view_event_form"/>
        <field name="arch" type="xml">
            <button name="toggle_active" position="before">
                <field name="website_url" invisible="1"/>
                <button name="website_publish_button"
                        type="object"
                        class="oe_stat_button"
                        icon="fa-globe">
                    <field name="website_published" widget="website_button"/>
                </button>
            </button>
            <label for="is_online" position="after">
                <field name="website_menu"/>
                <label for="website_menu" string="Website Menu"/>
            </label>
            <xpath expr="//button[@name='button_done']" position="before">
                <button name="action_open_badge_editor"
                    type="object"
                    states="confirm"
                    string="Edit Badges"
                    class="oe_highlight"/>
                <button name="action_open_badge_editor"
                    type="object"
                    states="done"
                    string="Edit Badges"/>
            </xpath>
            <xpath expr="//field[@name='auto_confirm']" position="before">
                <field name="website_ids" widget="many2many_tags"/>
            </xpath>
        </field>
    </record>

    <record model="ir.ui.view" id="view_event_registration_form_inherit">
        <field name="name">view.event.registration.form.inherit</field>
        <field name="model">event.registration</field>
        <field name="inherit_id" ref="event.view_event_registration_form"/>
        <field name="arch" type="xml">
            <field name="partner_id" position="after">
                <field name="website_id"/>
            </field>
        </field>
    </record>

</flectra>