contract/contract_sale/views/contract.xml

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

    <menuitem
        id="menu_contract_sale" name="Contracts"
        parent="sale.sale_order_menu"
        action="contract.action_supplier_contract"
        sequence="2"
        groups="sales_team.group_sale_salesman"
    />

</odoo>