I think for that you will need to click File > Rename Project.
Helpful and Handy Links
Thanks, Rick! A helpful, correct answer to what turns out to have been a slightly embarrassing question...
This command is grayed out (disabled) on my file menu. How can I get this command to show as active so that I can rename my project?
This thread is a bit long in the tooth.
Can you provide more detail? Version of RoboHelp, how you are trying to change things, etc?