That must be answered from the published programme material. Family coverage, age limits and any per-person amounts are terms of the framework and cannot be inferred from other categories.
Family rules do not transfer between classifications
Households routinely assume that whatever they have read about one route describes the others. It does not. Work rights for a husband or wife, the position of a son or daughter over twenty, how a grandparent is treated, and whether an amount is charged once or for each individual are all settled differently from category to category, and there is no general principle that carries across.
So take the government's own text and answer four questions from it in writing: which relatives are named, at what ages, on what terms, and at what price for each. Anything the text does not name is an open question requiring advice, not a gap to fill optimistically. Where a household supports a grown son or daughter, or an elderly relative, treat their inclusion as unproven until the published wording says otherwise, since across immigration routes generally neither relationship creates an automatic entitlement to accompany anyone.