Select the directory where your archive will be generated with the “Destination” option, then click on the Prepare project button. It will check your scene and the assets, then create a .vub archive with all the needed files.
Finally, you can upload this .vub file by clicking on “Submit” if you have installed RANCHSync or on the RANCH website, to start the rendering.
Alternatives Process
Open each referenced or linked external scenes and use :