Hi Darla,
This add-on is supported in a single-instance deployment of the Splunk platform, so you can install it on your single instance and configure input collection there, and that should be supported.
If you have a distributed deployment, per the documentation, you should set up a heavy forwarder (a full Splunk Enterprise instance) to handle your data inputs. (This add-on does not support universal forwarders for data collection.) Install the add-on on BOTH your search head and your heavy forwarder, but configure the add-on on your heavy forwarder only. Make sure you are using an account that has the admin role when you perform the configuration.
Here is the installation documentation: http://docs.splunk.com/Documentation/AddOns/released/Box/Install
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