PayPal Donation Button Integration

Hi,

I currently have a paid version of Ninja Forms and PayPal Extension. I am trying to setup my donation form for my website with the PayPal Button and am having difficulty doing so. Is this possible to do? Please check out the link below for details of what I am trying to achieve on my site. Thank You!

http://s15.postimg.org/k6c48jnej/Donation_Form.jpg

https://wordpress.org/plugins/ninja-forms/