Shielding entities are most often included in touch applications and are used to provide noise immunity.
Though Sense's templates you can add in your Layout any shielding entity of the following shapes (similar to those of Outline templates):
Rectangular Shielding Entity: height and width (both in mm) are needed. In case you select to add rounded corners, you also need to specify that curvature radius (in mm).
Circular Shielding Entity: radius is needed (in mm)
Ellipsoid Shielding Entity: radius a and radius b are needed (both in mm)
Trapezoid Shielding Entity: you need to define base and height (both in mm) and angles 1 and 2 (in degrees)