If there is not a way to do this in both the mixer window and the automation lane in the Edit window . I feel that there should be a way , since a lot of certain kinds of fader rides need to be very small.
I know that Studio One is young and learning how to be a more professional DAW , but a lot can be learned from Pro Tools from Editing Tools to Automation. Been a PT user for more than 15 years. PT can do this.