ArcPaladin here is a quick rundown on how I have set up my additional runtimes. Create folders wherever you wish to save them e.g. in my documents or on an external hardrive I have several runtime/folders and I have named them accordingly:-

• RX V4 – V4 stuff
• RX V3 – V3 stuff
• RX M3 – M3 stuff
• RX Building Props
• RX Plant props
• RX People Props
• RX Hair – all hair
• RX All Poses – all poses and so on

It is up to you what you call them and what goes in them. Once you have created the folders start up Poser go to your main runtime and at the bottom of the menu list is a plus sign (Add Runtime) click on this and browse to where you have saved your runtime folders add each runtime you have created. When you buy content and you wish to install stuff, simply point the zip file and or installer to the Runtime in which you want the items to live. I usually install the main characters i.e. V4.2 M3, Aiko, David etc. and all their morphs into the default Poser Runtime, but everything else props, hair, clothes etc, goes into it’s own respective runtime... I hope this helps

Oh, let the sun beat down upon my face. I am a traveler of both time and space ....Kashmir, Led Zeppelin