First of all, if you want some answers with 100% details you should go on CIS HELP, they explain everything about the product step by step (this is the V6 one you can also chose previous versions help).
Then, if you still have some questions you can ask us but reading the HELP page is really needed as most of the answers you need are explain there.
I’m sorry to say that it’s literally not possible to answer your questions. The only way to do it would be to essentially recreate the help files, which is obviously not possible to do in a forum.
Thus, I do not expect that anyone will be able to answer any questions you ask until you read through the help files to see how much you can understand first. Only after that can we help.