You can use the Flip Angle command when creating or redefining a flat wall to flip the wall orientation along the attachment edge. To make the command available on the Flat tab and shortcut menu, set the smt_allow_flip_sketch configuration option to yes.
When you flip the angle of a sketch, the wall is mirrored about a plane to keep the symmetry.
When you flip the angle of a sketch, the wall is mirrored about a plane to keep the symmetry.