UK Economy 7 - howto?

I’m pretty new to HomeAssistant, and I’m not a programmer, and any solutions from searches I’ve come across are wildly confusing, I really don’t know where to start.

Does anyone have a Economy 7 for Dummies guide?

I have a Shelly EM currently recording import and export, but I’ve just moved to Economy 7 so have a cheaper night rate (00:00 to 07:00 UTC), and I’m totally confused as to how to get this working in the energy dashboard. I’d like to include the daily standing charge.

Does anyone have something like this working, and could give me a dummies guide as to how to replicate? Much appreciated.