Currently it is only possible to create dependency per specific item in the graph widget.

It would be very useful to build better dashboards when graph could have item pattern dataset where host pattern could also somehow have option to choose widget dependency.

This would result in ability to preconfigure graph with multiple items and then change which host items are being shown on the graph using a host selector widget as dependency.

Example of this is an environment with multiple sites where each site has more than one Zabbix proxy for HA and LB and if an admin wants to check on the proxies last 24h history they could click through each proxy or proxy group in a configured selector. Dashboards get very large when multiple similar hosts are configured and it's not feasible to always make a new slide for the dashboard. Since 7.0 launched with widget dependency feature automating graphs like this for similar hosts and templated hosts would be amazing.

Added an example image of what I meant with this configuration option idea.