Add the entity and its children to the game as local-only (i.e non networked) and ignore the settings on the main entity (the "net" or "networked" tags).
Add the entity and its children to the game as networked and ignore the settings on the main entity (the "net" or "networked" tags).
Use the settings on the root entity (currently using the "net" or "networked" tags) to determine whether to add the entity and its children as networked or local. Note that the settings on the children/descendants are not used, only the top-level root entity. This is because the unit here is the entity tree: you can't add only a subset of its entities as networked.
Determine whether or not an entity tree to add to the game should be networked/replicated.