I'm afraid that such a feature doesn't exist.
When creating the components, Advanced Installer already groups the resources according to the rules specified by Microsoft.
For example every EXE, OCX, DLL file have each their own component
More information on this topic at:
http://msdn.microsoft.com/library/defau ... onents.asp
However there is a workaround. You could create a create a script that changes the extensions of the files to be placed in package.
Example EXE -> EXXE
Then you can add the files to the project. This way Advanced Installer will not generate new components for those type of files. The number of components will be smaller.
After you added all the files save the project. Then open the AIP file in a text editor and replace the extensions you created with the original ones
All the best,
Ciprian