When to use this forum and when to use suppport forum...
Just an FYI… It might not be obvious, but this developer forum is more geared towards "developer" level of questions. If your question is around development, this is the place!
If your question is more around usage, install, administration, etc. This is your place:
Just saying, as you might get better help for non-dev stuff in the link above.
Documentum D2 Product manager
OpenText CE Products
Docs & APIs