Please follow these steps
1. On the Splunk bar, select [Useraccountname] > Account Settings.
2. Under the Search section, look for Search assistant and select Compact, Full, or None. Click Save.
3. The None mode turns the search assistant off.
In the free license, there is no such entry in the Splunk bar to be able to do that. Is there some way to turn it on again with the free license?
This has been asked for before,
With this response:
Engineering has confirmed that this is a bug, it should be fixed in a forthcoming maintenance release.
it's a bug and will be fixed in 6.5.1
after 6.5.1, splunk assistant under free license will use Compact mode by default and the mode can't be changed