Multiple EC2 instances with Elastic IPs

I currently have one EC2 instance running with an Elastic IP. In my DNS settings, I have an A record pointing to the Elastic IP.

If I wanted to add a second instance, how would I go about doing that? I know how to launch them, and get the data transferred, but what do I do in my AWS console and DNS settings to have more than one instance pointing to the same website?

Thank you in advance!