Bhavya Singh,
Please find it on CAESAR II Technical Reference Chapter 3, Page 3-48 to 3-49 (this is version 2011). For previous version just look at C2TR chapter 3 on Hanger subject. You will find it.
If you have any question, please use as many as possible reference you can look after, study it and if you still have problem, then you may ask.
Regards