Graphics and shapes are added from the left toolbar of the Plate Editor. The toolbar appears only for editors and managers, after the plate settings step.
Adding a graphic
The Upload Graphic (SVG/EPS) button opens Add Graphic, which has two tabs.
Upload New takes a file dropped onto the panel or chosen through the file picker. Accepted formats are SVG and EPS, up to 10MB. EPS is converted to SVG on the server, which takes longer.
Adding a shape
The Add Shape button opens a flyout: Rectangle, Circle, Triangle, Diamond, Star. The shape is added at the center of the plate, sized relative to it, with no fill and a thin black outline. Shapes go behind text and graphics. Fill Color and Border are set in the right panel.