Is there a better way to do this already? If there is I can't find it.
When adding a new device, go from the Discovery Page to the Device Page by clicking on the Device Name.
Check/correct functions, drivers and Name/Label. Check/save Preferences. Configure. Test.
Instead of going from the Device Page to the App Page to the Dashboard list to the selected Dashboard, then add the new device for use with that Dashboard.
Sort of the same linkage like "In Use By" once a device has been added to a dashboard or rule.
Have a drop-down with all available Dashboards, select the desired Dashboard, add new device. Click done, back to Device page.
Or maybe I've been doing it all wrong to date.