Battery Charge Slots

Hi, I'm a real novice but I'm trying to work out how to set more than one charge period for my battery.
I am currently on Octopus Cosy tarrif which has three cheap rate periods so would ideally like to set three charge periods. I've found the "Remote Control" panel in the portal but can't see how to set more than one slot here, so no further forwards than I was ins the GivEnergy app on my phone.
Any clues as to what to do next would be very welcome 🙂

MarkFord You will need to provide more details about your battery/inverter (generation etc) - older inverters as I understand it, only had one slot - newer ones have 10 (I think - my AIO does, not sure about the low voltage ones)