All ready-made presets are in the left panel in the “Presets” tab, read more about each preset here.
You can also create your own presets. Here's what you need for this:
- Create a design element, be it a button, tab bar, stripper, etc.
- Select it and click “Create Preset” in the panel that appears.
- In the drop-down list, turn on the desired preset, all preset settings will appear in the right panel.