In Motion Dock, enter Edit layout, select Snippy, and click Module settings in the top bar. You can also double-click its slot in layout mode or right-click it and choose Module settings.

Settings save as you change them and carry across projects. Changing a setting does not change layers until you run an action.

The panel's Pad and WPM fields edit the same padding and reading-speed settings shown here.

Settings

SettingDefaultRangeEffect
Padding (frames)0−999 to 999, whole framesAdds handles around keyframe and marker ranges. Negative values tighten them. See trimming.
Reading speed (WPM)2001 to 2000Sets the word-count rate for Read time. The inline WPM field uses steps of five.
Read padding (seconds)0.50 to 600Adds time to every Read time layer before rounding to frames.
Sequence read-time layersOffOn or offMakes Read time arrange text layers end to end. Shift-click reverses this once.
Fit comp moves content to 0OffOn or offOff adjusts the comp display start to preserve timecode. On keeps the existing display start. Shift-click reverses this once. See comp fitting.