TTMSFNCWXdoc

I plan to consider purchasing TTMSFNCWX. But the functionality of the TTMSFNCWXDocx component is not clear. Downloaded the demo. I created a 4 by 4 table. But I didn’t understand how to merge cells? Is such functionality possible? I also couldn’t find how to indent the left side by 50 points. Has all this been implemented? If not, then I see no reason to buy this product.