How to change layout set in KM room part...

Hi,

My company is currently using EP6 SP15 and is in the process of trialing the use of Collaboration room.

One of the feedback from our users is that they do not like the layout of the KM document room part. What they would like to use is the "Tree list Preview Explorer" layout. Can someone point me to any documentation on how this could be done?

Thanks,

Thomas Siu