<?xml version="1.0"?>
<notebook colspan="4" position="inside">
                    <!-- Placeholder container to hold information about external accounts (Google calendar, Microsoft calendar, ...) -->
                    <page string="Calendar" name="calendar" invisible="1" groups="base.group_system" attrs="{'invisible': [('share', '=', True)]}">
                        <group name="calendar_accounts"/>
                    </page>
                </notebook>
            