Contractor accounts - repost

In short: We are a continuing education service. I want to add a feature to my wed site which will allow a user to create an account where they can choose a seminar which they want to attend, and keep a log of all seminars they have taken on their "home" page. I would also need a back end where I can log into to view a "roster" of each seminar. (AS people sign up for each seminar I nedd to be able to click on a seminar and view all the people who signed up.) Create account / log in User name and password Register for seminars Keep a record of all seminars Request certificates (once the seminar is complete they should have an option to print a completion certificate) Click on seminar to add to your schedule. 1.) November 7, 2013 Sponser Grounding 3 hours Quality INN PRICE 2.) December 10, 2013 Sponser Services 5 hours Quality INN PRICE 3.) January 14, 2014 Sponcer Code Update 10 hours Quality INN PRICE Seminar History 2013-2015 (Click) (shows all the seminars attended in that time perior) 2016-2018 (click) (same as above) Admin Back end Edit 24 hour schedule Edit 10 hour schedule Click on a seminar date to see roster- Roster for: 11/7/13- (Click) View all people who signed up) I also need to have a butten where I "Confirm" a person for a seminar when their payment is received. Once I "approve" them in the back end it should also show up as "Confirmed" on their personal schedule and they should get an email saying their payment was received and they are confirmed to attend the seminar 12/10/13- (Click) same 1/15/14 - (Click) same More details / specs avaialble if interested.