Add each participant individually and when you're done click the 'Add to Cart' button.
Each participant will be emailed login details immediately. There is no time limit on this access.
You have 3 Payment Options: You can pay with a credit card or paypal at the time of ordering online or for school orders, payment is available later by bank transfer. If you have a purchase order number from your school, enter it at checkout so it's included on the tax invoice. A tax invoice will be emailed to you automatically after purchase.