as i know the Project has Testitems and the project suite to.
i think this is really logical that you can define testitems. i think it doen't matter if an Testitem is a projectsuite or a scriptfunction thats only depending on the Testarchitecture you want to have...
i hope i did understand your Question right.
Note: every post contains personal oppinions which are not coactive representing the oppinion of the ROSEN Group
Using: Testcomplete V 9.20.2460.7 - Jscript