Draw curved walls with Arc Drawing modes
Draw curved walls using Draw by Bending, Draw around Center or Draw along Tangent, and adjust the radius from the wall's left panel.
Curved Walls (walls dropdown) draws in 'Arc Drawing' modes Draw by Bending, Draw around Center and Draw along Tangent.
Draw by Bending is the default: start point, end point, then a third point sets the bend.
A curved wall's left panel adds Change Radius / Radius to the straight wall's rows.