Diana,
Sounds like you're halfway there.
When you built the master project's TOC, you inserted a
marker for each of the sub-projects, right?
When you generated the master project, it created an output
folder with a "mergedProjects" sub-folder containing a separate
directory for each sub-project. These directories are nearly empty,
but make sure you do not change or remove anything manually, and
don't change the name of the mergedProjects folder.
After generating the master ouput, open a sub-project in RH.
Create a single-source layout that generates WebHelp as usual to
the !SSL! folder and publishes to the appropriate directory in the
master project's "mergedProjects" output folder.
Do this with each sub-project.
Now the master WebHelp page will show the combined TOC and
Index, if you made indexes for sub-projects, and a Search input
field that will look for matches in all sub-projects, provided you
generated search databases for them.
A key point: The master project must have at least one Index
entry of its own, or it will fail to pick up the sub-project
indexes.
If you used different skins, the one you attached to the
master project will override the others.
Have I correctly interpreted the situation?
Harvey