Change a section’s layout
1
Select the section
Click a Container or Columns block on the canvas. Click its edge if a block inside it gets selected instead.
2
Open the layouts
Click the Try another layout button in the toolbar on the right of the section. A strip opens with a thumbnail of each layout that fits.
3
Preview and apply
Hover over a thumbnail to see that layout on the canvas. Click it to apply. Press Undo to go back.
The layouts
A layout that doesn’t fit the content is not shown, and neither is one that would look the same as the section does now or the same as another layout in the list. A section with no blocks inside it shows no button.