Grafana integration with Splunk

Grafana integration with Splunk!!!
1)Splunk installation is required where grafana is installed?
2)If yes, is there is conflicts with data?
3)is there any trail version is available to test this usage

Can you please enable trial version for Splunk Plugin, so I can evaluate before subscribe.

I also need Subscription details, I have already enquired, still waiting for reply. please send details