How can I find Entropy,Anisotropy,Alpha Angle in Snap?

Microwave Toolbox
#1

I have a SAR data, and I want to find Entropy, Anisotropy and Alpha Angle. Where can I find the options? If there is any tutorial present, please provide me the link.

#2

http://sentinel1.s3.amazonaws.com/docs/S1TBX%20Polarimetry%20Tutorial.pdf