Help setting up Splunk for NC AIO

I’m running an AIO instance with the latest release (stable, not beta).
I want better logging and monitoring than setup by default.

I don’t know how to increase the logging parameter to 0 or 1 for more data.
I also want a guide to help me install Splunk to make sense of this log data, but can’t find a guide for the AIO version of NC.

Help appreciated!