User blog comment:B214/Question and Answers/@comment-162.202.198.72-20130831075428/@comment-16281343-20130831084738

Shemhaza was not picked to succeed Azazel in terms of power, he was picked more on a organizational stand point. And also he was the second in command when Azazel was playing around with most of the work ending up with him.

Try to read the short story "Lets Go with Training ~Hell Chapter~".

The remaining leaders will be revealed there and you can somehow see how Grigori operates.