As shown in figure
An ungrouped SVG image, an
ungrouped SVG file has multiple layers. Each layer is translated as
a group of objects with a base object in the Symbol Editor. When
a layer base object is selected, the Layout tab is displayed in the
Styling Customizer.
You use the different layout options to control the distribution
and arrangement of the objects inside the selected layer. The default
layout type is an Attachment layout. The following figure shows how
object distribution changes for different layout types.