Yes, he can use object group but he can't do it in mesh group only (I believe that is the idea). Here is object group example
Polygon_numbers_display_0001.c4d
I would strongly suggest to use Nodes exclusively, That way you don't have to bother with context, predefined templates, and most importantly it will be much faster and able to display much more data. Many text splines will choke object manager and viewport rather soon.