For the width, simply narrow the columns to fit their contents. For the vertical alignment, use the vertical centring options in the Table Tools>Layout tab.

You could also create something similar with a Equation field coded as:
{EQ \B(\A(Member 1,Member 2,Member 3)) Members of the Group}
This would produce an output like the image below.

Note: The field brace pairs (i.e. '{ }') for the above example are all created in the document itself, via Ctrl-F9 (Cmd-F9 on a Mac); you can't simply type them or copy & paste them from this message.

Attached Images

Group.png (7.8 KB, 18 views)

__________________
Cheers,
Paul Edstein
[Fmr MS MVP - Word]