TMate Change Set and planning questions

First, the price seems very high for this considering the lack of documentation. Just being honest here. I was wondering if there any plans to revamp some of the features and/or create better documentation for this plugin?

On change sets though, I have one I created where 2 files are in it for a change. I have a large number of new files, about 45, which means I have to scroll down to see the change set. How do I move files from the stop of the list into the change set? Also should I start using change sets ahead of time before a fix/enhancement by setting it as the default?