I created an AWS NLB and I created a new Target Group during NLB setup for TLS / Port 443.

Now I want to add another Target Group for TCP Port 80 and I created a new Target Group.

When trying to register the Target Group under "Listeners" the Target Group for TCP Port 80 is greyed out:
[![enter image description here](https://i.stack.imgur.com/7h2xO.png)](https://i.stack.imgur.com/7h2xO.png)

What am I missing?