Would it be possible to group hosts resource usage in a standard dashboard , similar to the DMC 's stats. :
But have data from forwarders and not Splunk hosts ?
Using Splunk 6.6 and Heavy Forwarders that send in all data.
I don't think the ability to monitor resource usage is native in Splunk forwarders, but you can install Splunk official apps that certainly can, i.e. (Splunk add-on for unix and Linux (or whatever OS you require)). The grouping of these values can be easily done with searches i.e. (host1 AND host2 | timchart cpu_usage).