I checked this document and still shows to use the Configure button
http://docs.splunk.com/Documentation/SplunkLight/6.6.3/Installation/GettingstartedSplunkAppforAWS#
Is there a new doc we should be using?
Step 4: In Splunk Light, add your AWS account and configure data sources
In your Splunk Light instance, add at least one AWS account to use for data collection, and configure your data sources (inputs) to get your AWS data into Splunk Light. You will need your AWS Account Access Key ID and AWS Secret Access Key. Splunk suggests you configure all the data sources listed to populate all dashboards. Each data source has instructions in the user dialog about how to add and configure the input.
Add your AWS account to your Splunk Light instance.
a. In Splunk Light, go to the App for AWS page and click Configure.
b. Under Accounts, click Add AWS Account.
c. Enter a friendly name.
d. Add your AWS Account Access Key ID.
e. Add your AWS Secret Access Key.
f. Click Add.
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