https://docs.splunk.com/Documentation/Splunk/8.2.2/Data/Howdoyouwanttoadddata The fastest way to add data to your Splunk Cloud instance or Splunk Enterprise deployment is to use Splunk Web. After you access the Add Data page, choose one of three options for getting data into your Splunk platform deployment with Splunk Web: (1) Upload, (2) Monitor, (3) Forward The Upload option lets you upload a file or archive of files for indexing. When you choose Upload option, Splunk Web opens the upload process page. Monitor. For Splunk Enterprise installations, the Monitor option lets you monitor one or more files, directories, network streams, scripts, Event Logs (on Windows hosts only), performance metrics, or any other type of machine data that the Splunk Enterprise instance has access to.

According to the Splunk system admin course PDF, When adding native users, Username and Password ARE REQUIRED

https://docs.splunk.com/Documentation/Splunk/8.0.5/Admin/Aboutlicenseviolations
"Enterprise Trial license. If you get five or more warnings in a rolling 30 days period, you are in violation of your license. Dev/Test license. If you generate five or more warnings in a rolling 30-day period, you are in violation of your license. Developer license. If you generate five or more warnings in a rolling 30-day period, you are in violation of your license. BUT for Free license. If you get three or more warnings in a rolling 30 days period, you are in violation of your license."

https://docs.splunk.com/Documentation/Splunk/8.0.1/Troubleshooting/Usebtooltotroubleshootconfigurations
"The btool command simulates the merging process using the on-disk conf files and creates a report showing the merged settings."
"The report does not necessarily represent what's loaded in memory. If a conf file change is made that requires a service restart, the btool report shows the change even though that change isn't active."