1. Select your Credentials:
ARN Role: The identifier for the IAM role itself. See: IAM Identifiers
External ID (optional): This is useful when you need to grant third-party access to your AWS resources.
2. Enter the name of your AWS S3 bucket.
3. (Optional) Enter in the path to your bucket.
4. Name this connection.
5. Click Create.
6. Click Launch Integration or the three vertical dots and select Advanced. In a new window, you will be directed to create a CloudFormation stack. See: AWS CloudFormation
7. Once the stack has been completely created, return to the Upsolver tab and click Done.