Impossible d'ajouter une quatrième colonne sur un site de communication Sharepoint

Hi @Razakarivony, Tiana /MA/EXT ,

Thanks for your question.

Our forum is an English forum. It is recommended that you post in English, which can effectively avoid misunderstandings. According to machine translation, your question is that the "Add Vertical Section" button is greyed out, the vertical section cannot be added, and is it possible to add an image to the vertical section right?

1.Note: You cannot have a full-width column and a vertical section on the same page.

May I confirm that you have added the Full-width section on the page? If so, you may need to delete the Full-width section to use the Vertical section properly. If you haven't added the Full-width section but the Vertical section still not available on the page, per my testing, I would like to suggest you add a Full-width section and delete it to check the results.

2.You can add an image to the vertical section(Add an image web part).

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