CC does not have cloth simulation tools (conform is for minor automated adjustments when you swap cloth between different characters mostly).
Moreover, it does not have advanced Mesh Edit and Sculpt tools for properly fitting cloth on a character, which Blender and 3ds Max are featuring for instance.
For the best result you should create and/or fit the cloth (specially complex one) on a CC character in one specific pose in the app of your choice (3ds Max in your case).
Then import it as an accessory to the same character in the same pose (a little tweaking by Y and Z transform might require) and then transfer weights.

You may also try to tweak bones/pose of the character until it matches the imported cloth. But that is something I do not recommend and it's hard to perfect the fit this way.