There are four different layout types currently available:
horizontal
vertical
2x2
3x3
You can change the layout of any grouped list by clicking the layout button on the top right and selecting your preference.
If you do not see this button, your list is probably not grouped yet.
To group a list click the group button.
To add more grouping types, turn on section strategies (e.g. custom sections, time blocking etc.)
Vertical layout
Horizontal layout
2x2
3x3