Unfortunately 2 days have passed without an answer, I know that the top and button shapes for a row must be an SVG file, but unfortunately not where I have to place it in the template?

Hi Josef,

it was a weekend, right. In that period support is limited. Shops, even most of pharmacies, are closed.

About your question, custom shapes are not developed yet. You have to use your own CSS method to add your own (custom) shape for the section (row).
Quick tip! Add custom ID name for Row then use custom CSS with custom shape file / styles etc. Do it like you would do it for HTML site. That same rules are here.

Hello Paul, I am always happy when you reply as it is always a constructive exchange.

Can you give me a tip on how to call my own shape via CSS?

I use SPPB because I hope not to have to learn CSS ;-)