If you have your original content files, create your new runtime folder and install them. Take note of what's in those compressed files, or refer to the documentation files, and delete associated files from your old runtime. Link new runtime to the Poser Library. Caution, creating smaller, content-based runtime folders will become unmanageable within a short amount of time because the Poser Library does not sort runtime folders and your Library folders will grow exponentially. If you are determined to create multiple runtime folders, I would suggest categorizing them by the vendor and installing all the associated files with it. For example, create an Ali Hair runtime folder, install all the hair content that you own from him, then install all the other MATPose files from other vendors. That way all Ali hairpieces are in one runtime folder along with their associated textures and morphs.