Sometimes it's good to open something else by clicking combs instead of just broadcasting selected item to the dashboard. Like clicking on host comb may i.e. open host dashboards.

Sample custom URL to do that:

/zabbix.php?action=host.dashboard.view&hostid={HOST.ID}

Attaching not-so-pretty patch that does optional custom onclick window opening for 7.2.3, feel free to attune visual representation and other things as you see fit.