How do I get the "create new product" and offer a user defined amount?

How do I get the "create new product" option while having a "user defined amount" within the form/payment integration? I need to have both feature so if clients just want to book and pay a min deposit of $50 but they also need to specify their package details within a "product"; ex size shirt and other package offerings. Does that make sense? How can I do both?

 I attached a screenshot of how I need the product options listed... just need a way to put the user defined amount in so it will integrate with paypal. Please help.

Thank you

To add an option of 'user defined amount' you can create another product with a price of $1 and add a textbox quantity selector for it. This way if user enters any amount, it will be multiplied by $1 and added to the total. Please check the screenshot below. Would this work for your case?

Hi, thank you for this option however the final form with adding this option is complicated. It will confuse customers. Is there another option to adding the user defined amount?

Or if I select the user defined amount option, allow it delete the products but is there an add on where I could still create the details like shown in the picture? So customers can still make selections.

I'm sorry, but you cannot have user defined amount and product based items in the payment tool. You have custom options in the payment field, so I think the best to do this would be to get configure the product items using our basic dropdown and short text entry fields.

Here's a demo form you can check: https://form.jotform.com/91000836939964.