Databases
Effects are stored into Databases (e.g. “Behaviors”, “Appearances”, “Disappearances”), which are a Data Asset on their own as well.
You can add and remove effects to any Database however you prefer, and you can have multiple Animated Text Block widgets share the same Databases too. By default, all Animated Text Block widgets will share the same “Default” Databases from the settings file.
You can create new effects by right-clicking in the Content Browser -> Miscellaneous -> Data Asset -> choose desired behaviour/appearance/actions etc as class.
Since you can also edit effect tags in each Data Asset, you could create different ones for different purposes, like a specific “shake” effect that applies when a dialogue has to communicate “cold”, and another when it should communicate “fear”.