Cover, Sweep, Loft
Enclose open edges, make geometry changes along a path of edges, and connect multiple profiles or edges.
To close a series of faces
Click the cover tool from the action bar.
Click the edges of the object to cover.
To sweep geometry along a path
Mark a face of an object that you want to cut.
Click the sweep tool icon.
Select the face you marked earlier.
Select the edge you want to cut.
Click the Finish icon. The original object is modified along the sweep path.
Here is video demonstrating Sweep:
To loft multiple profiles or edges
Click the Loft icon.
Click the edges on the first object and click the arrow.
Click the edges on the second object.