Newbie-Cause and Effect Diagram

[wnfisba]

I have a cause and effect diagram and I am trying to size the text box. When
I click on it and get the cross arrows, it will make it bigger and smaller
and turn it but I just can't simply highlight the text box and play with its
size. I did see where I can play with the X and Y designations. But is there
any way that I can size it with my cursor???

Is there any way to find out what kind of object this is so I can add
additional objects of the like???

Thanks in advance for your help.

wnfisba