You can change the layout (grid, irregular...) of images in almost any Posterino document. The initial layout of images right after creating a new document from a template is just a handy start configuration.
To change the number of images in your document:
Open the
popup and display the layout methods by clicking on the button in the top left.Skip this step if the layout methods (see screenshot below) are already shown!
Choose a layout method (grid, irregular...) by clicking on a layout method icon: