Hi,
Your question in specific is complex and involves several points.
Below are some ways that can be helpful.
Fist there is a book SAP Treasury and Risk Management (2nd Edition).
The chapter 8 e 9, describes the main processes in hedge accounting, as Customizing and implementation Guide.
Other explanations are available through the SAP help:
You can also check some basic processes through SAP Tutor, some relevant processes are available inlink below.