from sectionproperties.pre.library import rectangular_section

geom = rectangular_section(d=200, b=150)

# using relative shifting
geom_step_1 = geom.shift_points(point_idxs=1, dx=50)

# using absolute relocation
geom_step_1.shift_points(point_idxs=2, abs_x=200).plot_geometry()