<?xml version="1.0" encoding="utf-8"?>
<odoo>
    <record id="view_partner_connector_form" model="ir.ui.view">
        <field name="name">res.partner.connector.form</field>
        <field name="model">res.partner</field>
        <field name="inherit_id" ref="base.view_partner_form" />
        <field name="arch" type="xml">
            <xpath expr="/form/sheet/notebook" position="inside">
                <!-- change the invisible attribute to 0 when used
                     in submodules -->
                <page string="Connectors" name="connector" invisible="1">
                </page>
            </xpath>
        </field>
    </record>
</odoo>

<?xml version="1.0" encoding="utf-8"?>
<odoo>
    <record id="view_partner_connector_form" model="ir.ui.view">
        <field name="name">res.partner.connector.form</field>
        <field name="model">res.partner</field>
        <field name="inherit_id" ref="base.view_partner_form" />
        <field name="groups_id"
               eval="[(4, ref('connector.group_connector_manager'))]"/>
        <field name="arch" type="xml">
            <xpath expr="/form/sheet/notebook" position="inside">
                <!-- change the invisible attribute to 0 when used
                     in submodules -->
                <page string="Connectors" name="connector" invisible="1">
                </page>
            </xpath>
        </field>
    </record>
</odoo>

Add Manager group on partner view connector's tab
Add Manager group on partner view connector's tab
