Cannot find 'DynamoDB event stream role'

[jyothri]

I was following the guide and at this step in Lab 3

15. Now you'll add an IAM role to your Lambda function. For the Role (you may need to navigate to the Configuration tab in Lambda to see this), create a new DynamoDB event stream role by clicking DynamoDB event stream role in the role dropdown. This will open a new page confirming that you want to create a role, just click Allow to proceed.

However I don't see the option of DynamoDB event stream role. I have attached the screenshot of the options I see. I am guessing I have to do custom role? Also attached is the screenshot when I choose custom role. Please guide me on how to proceed?