Hey Robert,
I'm guessing you are referring to the 'restructure table' feature in your first question. See here for an image -
http://archicad-talk.graphisoft.com/viewtopic.php?p=146577
For the second question, you can schedule any parameter that is available in a window. Just edit the scheme settings and add or remove the parameters as needed.
You will probably need to go to the 'Additional Parameters' button at the bottom, then navigate to the window of choice in the library. In there you will find separate width and height parameters listed for the the wallhole, reveal and unit dimensions. Look for ac_wallhole_width, ac_reveal_width & ac_unit_width.
The contents of the window label/marker on plan is controlled in the marker settings tab actually found in the window itself. Simply change it to show unit size instead.
Hope that helps!