Welcome to the forum, Candice.
I know nothing about windchill but the tables do have one limitation. Okay, maybe more than one but the border is fixed. You cannot remove it. You can change cell borders, but not the surround around the entire table.
Typically, we define the entire visual aspect of the title block with a number of tables. You can merge cells, hide lines between cells, and change the line color/weight of these tables. If you saw the true table definition some of the more intricate title blocks, you would be amazed. Of course, you can add sketched features and loose annotation, but for the most part, it really becomes an artwork or a maze to get something that should be so much simpler in order to use intelligent parameters into a drawing format. I have gone so far as to have a full drawing size table just to put an intelligent proprietary statement in the gutter of the format without the visible border... which is of course, now the entire drawing.
You can pretty much place and size any table with great precision. But it is a bit involved. In your case, you can make the cell exactly the same size as the border around that field.
