Hi Luis ,
In the case of the reports if we add a report tag like the one in the below ,  a menu named Quotation (what is given in the string) will appear in the place you mentioned.

Thank you

<report
    id="report_tour_quotation"
    string="Quotation"
    model="tour.booking"
    report_type="qweb-pdf"
    file="tours_and_travels.tour_quotation"
    name="tours_and_travels.tour_quotation"
/>