Aws Cognito: How to assign user to a user group when user signs up

Question

I have below user groups in aws cognito. Admin Member Paid member

I want to assign all user to Member user group as default when they sign up on my application so I can assign different IAM role on that user group.

How do I assign user to a user group programmatically?

Answer 1

I found that I can use adminAddUserToGroup to add user to the specific group you have set on AWS Cognito. http://docs.aws.amazon.com/AWSJavaScriptSDK/latest/AWS/CognitoIdentityServiceProvider.html#adminAddUserToGroup-property