Customize a default Hugo menu

Summary

I would like to reshape the default Eclipse menu which appears when you create an event page. Indeed, this is confusing to see many sites such as "Projects", "Working Groups", "Members",... and a Download button to daown the Eclipse IDE in a scientific event (https://events.eclipse.org/2023/esaam2023/) which has nothing to do with it.

I try to follow the examples provide on these pages:

• https://gohugo.io/templates/menu-templates/#menu-entries-from-the-pages-front-matter
• https://gohugo.io/content-management/front-matter/#front-matter-cascade

I created a new page test.md with the following content:

---
title: Menu Templates
linktitle: Menu Templates
menu:
  main:
    name: "how to use menus in templates"
    parent: "Test"
    weight: 130
---
Test

==> I could add a new item after the "Members" item: "Test"... This is already a first step. Now, I would like to remove the other items ("Project", "WG", "Members") and the Download button

Any idea how to do that? Thx a lot