You can save your current touch interface as a preset that you can reuse later, possibly share it with someone else. The presets are saved in the following plugin folder: Touch Interface Designer Content \ Presets. Be careful though if you use custom images or material in your presets because the references could be broken if you share your preset with other.
To save a preset, simply click on Save as Preset located in the editor toolbar. Then name your preset as you wish. You can find your preset in the Presets folder and you can use it later by clicking on Apply Preset.
To use preset, simply click on Open Preset button and select preset you want to apply.
In a future update, I plan to improve the preset system and provide basic presets with the plugin.