Create a satin border that follows the selected line automatically, by clicking on it. If required, use Color Tolerance to select a larger area according to the similarity of adjacent colors. The border width can be from 1 to 12mm. Set it beforehand, or if desired, alter it afterwards in the properties dialog.
The Satin Line uses the settings for Satin Line in Fill Area and Line 
properties, and the Running Stitch uses the stitch length setting there for Running Stitch.
For complex outlines, a group of satin borders is created to make up the trace. To alter properties of all the borders, click a single object in the Group for the traced design, then right-click and choose Select Similar from Group 
. Right-click the object again, and select Properties to choose settings for all objects of that type, e.g. Running Stitch, in the design. Alternatively, in the Edit tab either hide all objects before and after the satin trace, then use Global Properties to adjust width, density and underlay, or hold the Ctrl key and select the desired satin borders then right-click one and select Properties to adjust width, density and underlay for the selected lines.
Repeat to trace more lines, and right-click to deselect.
Shortcuts
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Quick Create Tab:
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Keys: Alt, Q, T, S