Welcome to our community, Thom
Actually RoboHelp 7 makes this easy.
For starters, you may rename the entire project (which would
in turn, rename the TOC, Index and all associated files) by
clicking File > Rename Project.
To Duplicate a TOC structure, click View > Pods >
Project Manager
Expand the Table of Contents pseudo folder
Double-click the existing Table of Contents
Ensure the new pod is wide enough to see all the icons across
the top. There should be a total of 10 icons
Click the last icon in the list and a dialog titled "Select
TOC" should appear
Click New
Type a name and click the "Copy existing Table of Contents"
check box
Click the ellipsis ( ... ) button
Choose the existing TOC and click Open
Click OK
I'm not sure why you would want to duplicate the Index, but
essentially the same steps I just listed for the TOC should work
for that as well.
Cheers... Rick