MODx specialist required to add a account/ user management module to site

i need to add a user management module to a current website build within MODx, there needs to be 3 levels of users, super admin, company user and individual user, idea is user will have to register to use the site functionality so an account management page should be there as well HTML etc etc design we can do in house we literally need someone familiar with setting up user accounts in modx and will only entertain bids from those who can show a MODx site incorporating user registerations that they have produced, this is about 2-3 days work for a skilled person