How Do I add/remove Photoshop Raw Presets?

Hello Adobe Photoshop Community. I'm hoping someone how there can help me with this, hopefully simply, task that keeps frustrating me. In Photoshop Raw, there are now Presets that come installed for our convenience, for example; Cinematic, Futuristic, Medium Skin, Light Skin, etc.

However, after I have made my basic edits to a file and then I go play around with the Presets and maybe find something I like, but change my mind, I have no idea how to delete (or deactivate the preset) and revert back to what my Raw edits looked like before the addition of adding the Preset. I wish it was as simply as clicking the preset again to deactivate it.

I hope someone out there, knows what I'm taking about and can help.

Thank you!