Hiii! Does anyone know how to work the homebrew system on D&D beyond? I’m trying to make a spell casting list for a subclass but don’t want access to every single spell, like I want to pick and choose what spells the subclass can prepare from¿ if that makes sense. Any help would be appreciated!!

Finally beaten the Ender Dragon on survival!! Younger me is jumping up and down rn I stg (I shortly lost all of my gear after this due to an Enderman)