Hi,
     You can restrict the Page visibility by  groups. just try this

  <record model="ir.ui.view" id="view_id">
    <field name="name">sale.order.form</field>
    <field name="model">sale.order</field>
    <field name="inherit_id" ref="sale.view_order_form"/>
    <field name="arch" type="xml">
        <data>
            <xpath expr="//page[1]" position="attributes">
                <attribute name="groups">groups who can have the visibility to this page</attribute>
            </xpath>
        </data>
    </field>
</record>