A popular option to manage and control your GivEnergy inverter is to use Predbat.
Predbat is free software that will plan charging and discharging of your inverter and battery to minimise your electricity costs, generating predictions of house load and solar generation, importing in cheap rates, exporting in more expensive rates, using the grid when it is cost effective to do so.
It runs as within Home Assistant so needs a computer to be running all the time, that could be an old PC or a Raspberry Pi. There is a cloud version of Predbat now available on a subscription basis.
Predbat then connects to your inverter using GivTCP, controlling your inverter locally (not via the GivEnergy cloud/portal, although that is an option if you want to).
Full details of Predbat are in the [Predbat documentation](https://springfall2008.github.io/batpred/). There are extensive (https://springfall2008.github.io/batpred/video-guides/) and [installation instructions](https://springfall2008.github.io/batpred/installation-summary/).
