Ahm - actually summary config is per resource (settings is the fallback):

s3db.configure("org_organisation", summary=...)

It isn't really good to use indices here - as that relies on the specific order of something in a different place. The sections have names, so they should probably be selected by names:

s3db.configure("org_organisation", summary = [s for s in settings.ui.summary if ...])

You know what I mean? This retains the original order, yet doesn't depend on it.