Modular subpages

Hello,

Zrzut

This is my pages tree
Is it possible to take advantage of the modular as subpages

I'm not sure I've ever tried. Did you try it?

Yes, I try
if I understand correctly:

I have identical modular.html.twig for 01.home and 02.offer/01.books

{% for module in page.collection() %}
{{ module.content }}
{% endfor %}

01.home is Ok, but 02.offer/01.books don't display

Hmmm, I think everything works

Always remember:
bin/grav clear-cache

Especially with modular pages, clearing cache is important :) I usually turn off cache during development stages.