the rectangle tool and click the location on the form where you want the upper left corner of the rectangle to appear; a handle appears. drag the handle to the location of the lower right corner of the rectangle you want to create. the size of the rectangle can be changed in the same manner as a field.
drawing a line: to draw a line on a form, click the line tool and then click the location on the form where you want the line to begin; a handle appears. drag the handle to where you want the line to end. you can change the location and size of the line 