Set Guide page as a parent of a Service page

[keelanfh]

We have a few instances where we have a Guide, and we want to have a simple page linked from the guide. In terms of the IA of the site, this really sits underneath a guide page. An example (from existing site, but will look pretty similar in LGD) is https://www.essex.gov.uk/get-married-in-essex/approved-venues - there's a link to "Full list of approved venues", which doesn't sit right as part of a Guide, but can be linked to.

With the constraint on Service Landing Page parents, we have to skip out two layers in the hierarchy

(so it goes Births, ceremonies and deaths > Full list of approved venues
but it's really Births, ceremonies and deaths > Get married or form a civil partnership > Approved venues > Full list of approved venues)

It was flagged that this is a potential issue as we move this sort of content that would traditionally have been held in PDFs into HTML content.