How to upload existing AWS key pair while creating Node Template in Rancher

I am creating Node Template in Rancher and I want to upload my AWS key pair so that rancher will use my key to create the new Instances.

I can see a line:- Paste in your AWS key pair here. We’ll use this key to create your new Instances.

now the question is Where do I paste it?

I tried to find everywhere but I don’t have a proper answer. Please take your time to answer this.