Need help in setting up the banner image on homepage


Hi there, I am using a template in which I am unable to set banner image. Here I am sharing the link of that template. Please help me to solve it. I tried a lot but unsuccessful.

gooyaabitemplates. com / view-blogger-template

Please remove spaces from the link I have provided above because this forum platform is not allowing me to put links in my query. Honestly I quit in setting up the banner image and really need a genius for it. Waiting for your reply guys.