To adjust the column widths, click Layout > Columns > More Columns, and specify your preferred column widths in the ...

A single column supports the walls and roof of One-Legged House by IGArchitects, ... "Even though the layout has just one column in the centre, it gives the feeling of 'further space', ...

Fortunately, it isn’t difficult to transpose column values into a single cell as long as you don’t want to group the results. In that situation, you can use Microsoft Excel Power Query.