Is this possible to make in GoCentral?
It was easy to customize widths and columns in WebsiteBuilder, but it seems that all the pre-made "Sections" of GoCentral are impossible to change in any meaningful way.
I hope you are well. You can set square slidshow in GoCentral. Follow these steps;
You are describing features and settings available in WebsiteBuilder.
Those features and settings are not available in GoCentral.