Material properties for the plates in Plaxis 3D

Hi, 

I started to learn Plaxis 3D and I have basic doubt in the material assign for the plates. In the plate tab there is only one tab to define the equivalent thickness of the plate, young modulus and shear modulus from their Plaxis automatically calculated the stiffness parameters. If the plate is linear then we can simply provide the thickness and if it is not how we can define (let say the plate is not isotropic also). 

For example, I have provided the specification of the FSP IV sheet pile for your explanation. 

Thanks.