From this page, you can create and delete users, modify existing users, lock and unlock accounts, and reset passwords.

Modify User,
Reset Password,
Delete
User, and
Reset Security
Question become available.
Create a New User
is always available.
Unlock Email Authentication is available when you select a user
whose MFA Email Authentication is
Locked.
User is locked. Select to unlock.
User is unlocked. Select to lock.