This changes the password on your own AMP account — the same one you sign in to this site with. AMP checks your current password itself.
There's no automatic reset for AMP accounts. Get hold of the admin and ask for your password to be reset manually — they can do it from AMP directly, and you can set your own again afterwards.
Use your AMP account. Your password goes straight to AMP — this site never stores it, and AMP decides what you're allowed to do.
This server needs your 2FA code.