QCMDEXC and activation groups

Discussion came up at work.

My understanding is that QCMDEXC runs as if it at the same call level as the program that calls it. Do I remember correctly? So long since I worked that stuff.

It obviously runs in the same job as the program (even if it runs a SBMJOB), but somebody at work said it runs in the default activation group, "because commands run in the default AG".

I don't think so, but is that true? Maybe it is for the CPP program that executes QCMDEXC, but I would think that a user command, for example, runs in the activation group of its command processing program.

--Alan