How to calculate sample size for SEM analysis

Yesterday in advance quanti class, I ask the professor, how do I calculate sample size if my analysis is using SEM. Do I use G-Power or Raosoft. He said the is another software is used for SEM data analysis.

I give you all this link to use, In case you want to know how many repsondents needed for your data collection.

http://www.danielsoper.com/statcalc/calculator.aspx?id=89

http://www.danielsoper.com/statcalc/calculator.aspx?id=89

otherwise can google this

CALCULATOR: A-PRIORI SAMPLE SIZE FOR STRUCTURAL EQUATION MODELS