Customizing the Contribution Wizard

Hi all,

I have an Elgg site running, which I am trying to incorporate the Kaltura plugin into.
What I am trying to do, is to remove the "Photos" and the "Audio" tabs from the uploader wizard. I only want to use the Video portion of the plugin? I've search high and low and I realize I'm going to need to configure the uiconf xml, but I'm not sure how or where I would even put that in the code.

Please help..

Thanks,
Michael.