Status Panel plugin to monitor hosts status

We are using icinga2 monitoring system and we wanna have a public dashboard for all users, so we are configuring Grafana with status panel to monitor hosts status in first, i’m trying to configure the plugins but i don’t know what to put in Alias, Warning(empty i guess) and Critical (down i guess) fields ? And the queries A,B,C,… are for the metrics for one host or each query for different host ?