The distorted orthorhombic perovskites RMO3 (R = rare earth or Y and M = 3d transition elements) and their layered variants are continuing to reveal their interesting physical properties when subject to careful studies. The compound of our interest NdCrO3 is known to crystallize in the orthorhombic space group Pbnm. Recently ferroelectricity in NdCrO3 at about T = 85 K, which is below the magnetic ordering temperature, has been reported. In the present type of multiferroic materials an unambiguous determination of ferroelectric ordering is difficult because of very polar shifts in atoms involved. If however we know the parent Shubnikov group then we can use symmetry analysis to determine the active modes in the polar subgroup of the parent one. If the amplitude of the polar modes are large enough we can unambiguously determine the polar shifts and possibly the origin of the ferroelectricity by the so-called Amplimode method.For this we need to determine the magnetic structure and symmetry unambigously. Previous neutron powder diffraction results were not accurate and unambigous. Here we propose to do that by siingle crystal neutron diffraction on D9.