I want to upgrade my account to Privileged so that I can add notes without being limited by hourly restrictions. Do I need to contact management for this? If so, do I need to include anything in my request so that it's valid, such as a brief description of why I want an account upgrade?

There's no method of requesting an upgrade. Just keep up with good work over longer lengths of time and you might eventually get an upgrade.

No problem!

You don't need to request any upgrade, accounts get upgraded meritocratically.