Registering multiple attendees - receiving a discount

I am providing a registration form for a conference. When someone chooses to register 3 or more people, they pay $115 x # of attendees. I am not sure that I have the form set up correctly for that option. I believe my current configuration will still charge them $115 in total.

How can I set up this up correctly so that their payment amount comes through at the right $ amount?

You can use the "Form calculation" widget and conditional logic to apply the discounts.

I am not quite sure how your pricing really works, I see you have 4 options, they all are available and your users could select multiple items, should they be allowed to do that or only one option should be selected?

Here are some guide links that may initially help you:

You can assign calculation values on your drop down fields, check boxes and radio buttons by following this guide: http://www.jotform.com/help/301-How-to-Assign-Calculation-Value 

You can perform calculations using the form calculation widget: http://www.jotform.com/help/259-How-to-perform-calculation-in-the-form

You can also perform calculation using conditions, here's a guide that you can refer to: http://www.jotform.com/help/57-Smart-Forms-Using-Conditional-Logic 

We'll wait for additional information from you on how the calculation should actually work, from there, we'll try our best to help you setup your form.

You are correct, they should only be able to select one option. Members registering themselves should select #1, members registering 3 or more should select #2, and so on. 

I believe I just changed the option where users can only select one option. 

I have added the form calculation wizard, but I still don't have something set up correctly. What needs to happen (example) is user chooses option 2 and registers 3 people, then total price would be $115 x 3 = $345, which is how much they would be charged when they proceed to checkout. However, that total is not showing up on the Total Price field. 

I see you have now integrated a payment integration and setup the products directly there.

If you would just like to have a quantity field for each of the products, then that is possible by adding a quantity field in your payment wizard.

Here's my cloned form: https://form.jotform.com/60564186412959. Here are the steps on how I set it up like that:

1. I added the payment tool "Paypal" and enable the "Show Total".

2. Inside the "Payment Wizard", click "Add New Option". Then select "Custom Quantity".

3. Here you can change the name to "# of Registrants". 

The total value will adjust automatically based from the price and the quantity that have been inputted. There's no need to have a separate total field because it is already on the payment integration.

PS: I noticed that you are setting up two payment method, one is using Paypal and another by check. Please note you can only add one Payment tool in your form, in this case, you already have "Paypal". Even if your user selects "Mail Check", they will still be redirected to the Paypal payment gateway if their total purchase is greater than "0". To make a multi-payment form, please follow this guide: http://www.jotform.com/help/182-How-to-Create-a-Basic-Multiple-Payment-form