Request: Link to Dashboard from Aggregated Data

I believe @Thomas_Howard meant he aggregates the status literally in “SmartApp” in SmartThings IDE. Alternatively, you can aggregate the status using Rule Engine without coding. Create virtual device in SmartThings, and use Rule Engine in SharpTools.io to update the virtual device’s status when real devices’ status change. Then this virtual device can be added as in the dashboard as the aggregated status.

Here is a quick Rule Engine example:
In Triggers:
Trigger the rule when any of lights is turned on/off

In Flow:
Set the virtual device (All lights) to off when all the real lights are off (AND logic); otherwise, set it to on.