Custom Visualization - Options

[Carlo_Pulcini]

I find this (https://github.com/looker/custom_visualizations_v2/blob/master/docs/api_reference.md#organizing-opti...) list to be incomplete, in particular how can I :

1. Organize options in “sub-section” (e.g. Hide Legend and Legend Align, in native Line chart Looker visualization, have a nice “LEGEND---------” above them, making the options inside the Plot section tidier.
2. Make an option appear / disappear depending on a boolean option (e.g., once again the native Line chart, where if Hide Legend is toggled, then the Align Legend disappear).

Any help with this?

tentatively tagging @RichardCzechows as he seems pretty knowledgeable regarding this (looking at this answer Options for custom visualization)