We have parent Publication A. B and C are child Publications of A. A, B and C are mentioned as part of metadata on a Page (checkboxes for multi select). If the user selects B and C and publishes the Page from A, we are publishing the Page to B and C. Page is published to A by default.
When only B and C are selected, and published from A, we want to publish to B and C only and not publish from A. Is this possible?
If yes, what is the best location to achieve this (Resolver/Event System, or something else)?