The Subsurface Scattering material settings are organized in Basic and Advancedmodes. You can switch the mode from the toggle button under the Preview Swatch.
From the Add Attribute button,you can select additional attributes that can add up to the appearance of the material. For more information, see the Attributes And Layers section.
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Holding down Ctrl while having the Add Attribute menu open, allows selecting multiple entries without closing the dropdown.
The context menu of the Color slot provides options to Copy, Paste, and Reset the color.
A Resetoption is provided in the context menu of each Number Slider. You can reset the slider value to the default one.