Gunther Slade

What is the policy for using charachters and props bought in Marketplace for Machima? I have been contracted to produce a short 1 minute video for commerrcial use outside of SL and need to ensure I am properly licensed to use these digital elements and that the license I obtain will be transfered to my client and subsequently their client for advertising. I am not reselling any of the elements, just using them for visual animations, scenes, settings, actions, etc. How do I make sure I am legal?