Navigation:  Queries & Reports > Running Queries & Reports > Run PDF Reports > PDF Report Creator > Preview Toolbar > Report > Designer > Title & Footer >   Title

Click the 'Title' button

 

 

A popup appears where you can enter the title

 

 

Enter a Title name

 

 

Choose where you want it to appear:

 

 

Select the 'Properties' Tab to change the font & alignment etc.