When you first enter a report you will see that the sections of the report are placed in close proximity to one another. To resize the sections so that there is enough space to enter text, create graphics and insert fields, you should do the following:
Resize a section by moving your mouse pointer to the border of the bar above the following section. The mouse pointer turns to a double vertical arrow.
Click and drag the border to the required place, and then release the mouse. The section is resized.
For instance, to resize the Report Header section, move the mouse pointer to the top of the Page Header bar. When the vertical arrows appear, click and drag and then release to resize.
You can perform this operation on any of the sections, whenever and as many times as you like, till you get a suitable size for all the sections. Appropriate section sizes are important, not just for creating space to design a report but also for display purposes. For instance, if you reduce a section so that certain fields are not visible in Report View, neither will these fields be visible in Print Preview, and hence they will not be shown when the report is printed.
You can also resize the height of sections in the "Sections Properties" dialog (see Format sections in reports).