I am new to this forum.

I am from India. I have a doubt on Australia PR nominated category Subclass 190. Let's say my nominated occupation is ICT trainer. So, if I get the PR (and let's say the state sponsoring me is NSW), does that mean I can only work as ICT trainer (and not as business analyst or software consultant or any other job in the IT field), and only in NSW (and not in other states like Victoria)?
My fear is, Will I be tied down to the nominated occupation/nominated state forever, or am I allowed to apply for any other job in any other state? I am confused about this. So please help me. I'd greatly appreciate it.
Thanks,
Artist