cathlig

Hello fk59,
You could have a look on this:

On each page, in “Option de structure” (~”structure option”) there is the choice beetween:
Structure par défaut (mentionne ce que vous aviez choisi par défaut)
Barre latérale gauche
Barre latérale droite
Deux barres : droite et gauche
Pas de barres latérales : pleine largeur.

In english:
Structure option
Default structure (mention what you had chosen by default)
Left sidebar
Right sidebar
Two bars: right and left
No side bars: full width.

Then, you can modify Default structure of Home page and other pages:
Apparence / Personnaliser / Disposition des pages&articles / Régler la structure de la page d’accueil + Choisir la structure globale par défaut.
~ Appearance / Personalize / Layout of pages & articles / Set the structure of the home page + Choose the default global structure.

Hope it helps you.
Good luck,
Cathlig

Hello akedv,
Did you have a look on the following way:
Apparence / Personnaliser / Contenu de la page d’accueil / Délai entre les diapos.
In english:
Appearance / Personalize / Contents of the home page / Time between slides.

Hope it will help you.
CathLig

Thanks Denzel Chia, I already checked it but it is not solution.
Thanks soykatorce, may be I will try it but I’m not yet at ease with such manipulation…