Combining assets into one (blueprint?)

Hi, my question is next: what is the right approach to combine assets for instance, i got a house with windows and doors as blueprints set to match in the world, furniture, spot lights, and reflection boxes also. I would like to merge it all into one group so i can place it all together in the world so that all components match their position.
Also can I and how add afterwards more assets in that blueprint.

Make each element of house as a components and then in single blueprint place them in way you want, alternatively you can use child actor component to place actor blueprints as a components.

Hi!

You can use Victory plugin for combining and convert static meshes to instance mesh actor. But keep in mind, instances work only on Desktop. Mobile not support instansing.

This is link for plugin

This is video tutorial about this plugin