To show the print report in report menu you have to :

1- create report and link it with the required model

2- create your template and link it with the report definition

EX:

<report
    id="report_print_journal"
    string="Print Journal"
    model="account.move"
    report_type="qweb-pdf"
    name="account.print_journal"
    file="account.print_journal"
    print_report_name="'Print Journal- %s' % (object.name).replace('/', '')"
/>

<template id="print_journal">
    <t t-call="web.basic_layout">
        <div class="page">
            <t t-foreach="docs" t-as="guest">   #here means the recordset of model

and complete you report