Where do I find the link to pay fees for the visitor visa application?
When you will upload all your documents along with essential forms, then you need to transmit your uploaded documents by clicking on next option given at the bottom right corner. After that you will be shown the final page of transmitted documents. Then again you need to digitally verify the last page by selecting the option: 'I Agree'. Then, write your given name and last name to submit your file online. After that you will be lead to the payment page where you will find an option to pay the fee. Hope this will help you, but if you still you have any doubts then do write me again, I'll explain with screenshots.