MATLAB audio plugins do not implement this capability directly. However, many DAWs provide this for you. For example, the screenshot below shows a plugin dialog in Reaper, in which I have created two presets named "Fast" and "Slow". You simply click on the "+" button to create a new preset.
![](https://www.mathworks.com/matlabcentral/answers/uploaded_files/369076/image.png)