DemandShaper Solcast

Today I added the DemandShaper module to my EmonPi setup (emonSD-01Feb24), with a view to potentially use it with Sonoff smart plugs in the future. At the top of the Emoncms screen I now have a DemandShaper button. When I click this button, the only option I have is to add a device, however, I’m not at that stage yet. Instead, I’d like to pull in Solcast data to compare against my outputs, and if it matches reasonably well, potentially also use the Solcast forecast data. From this page it appears that DemandShaper supports Solcast, but does anybody how to set this up, assuming this can be done without having to add a device first? Thanks