My memory of project server is pretty vague, but if it uses a SQL
Server/MSDE database it may be possible to create a View in the database
that does what you need. If so, I don't know whether there is a way to
specify a person's username in the view to give you the results you need,
but /a/ way of doing that within a SQL Server environment would be to create
a view for each user that did the right thing.

Otherwise, Word does not provide a way to specify a GROUP BY clause in its
user interface, but there are a number of ways that the user interface might
be bypassed,  e.g.
a. you may be able to create a suitable VIEW in the server and use that as
the data source (as above)
b. if your users happen to have Access installed, it may be possible to
link to your Project Server tables/queries from access, then create the
Access query/queries you need and use those as the data source.
c. you can use Word VBA's OpenDataSource method to connect to a data
source, issuing a short SQL query directly (either around 256 or 512
characters)
d. if you can connect to your data source using ODBC, you can set up an
ODBC DSN and use Microsoft Query to define a suitable query to get your
data.

However, all the above assumes that your merge is based on a table of
records with identical format, i.e. that the result of the SQL SELECT with a
GROUP BY clause is returning a "flat table" of rows. If what you actually
want to do is produce a more hierarchical type of output, where you use
GROUP BY to specify some heading info and a number of "child records", Word
is not designed to do that. Let us know.

Peter Jamieson

Word does not really have the ability to perform a "multiple items per
condition (=key field)" mailmerge.

See the "Multiple items per condition" item under the "Special merges"
section of fellow MVP Cindy Meister's website at

http://homepage.swissonline.ch/cindymeister/MergFram.htm

Or, if you create a Catalog (on in Word XP and later, it's called Directory)
type mailmerge main document with the mergefields in the cells of a one row
table in the mailmerge main document with the keyfield in the first cell in
the row and then execute that merge to a new document and then run the
following macro, it will create separate tables with the records for each
key field in them.  With a bit of further development, you may be able to
get it to do what you want.

' Macro to create multiple items per condition in separate tables from a
directory type mailmerge

Dim source As Document, target As Document, scat As Range, tcat As Range
Dim data As Range, stab As Table, ttab As Table
Dim i As Long, j As Long, k As Long, n As Long
Set source = ActiveDocument
Set target = Documents.Add
Set stab = source.Tables(1)
k = stab.Columns.Count
Set ttab = target.Tables.Add(Range:=Selection.Range, numrows:=1,
numcolumns:=k - 1)
Set scat = stab.Cell(1, 1).Range
scat.End = scat.End - 1
ttab.Cell(1, 1).Range = scat
j = ttab.Rows.Count
For i = 1 To stab.Rows.Count
   Set tcat = ttab.Cell(j, 1).Range
   tcat.End = tcat.End - 1
   Set scat = stab.Cell(i, 1).Range
   scat.End = scat.End - 1
   If scat <> tcat Then
       ttab.Rows.Add
       j = ttab.Rows.Count
       ttab.Cell(j, 1).Range = scat
       ttab.Cell(j, 1).Range.Paragraphs(1).PageBreakBefore = True
       ttab.Rows.Add
       ttab.Cell(j + 1, 1).Range.Paragraphs(1).PageBreakBefore = False
       For n = 2 To k
           Set data = stab.Cell(i, n).Range
           data.End = data.End - 1
           ttab.Cell(ttab.Rows.Count, n - 1).Range = data
       Next n
   Else
       ttab.Rows.Add
       For n = 2 To k
           Set data = stab.Cell(i, n).Range
           data.End = data.End - 1
           ttab.Cell(ttab.Rows.Count, n - 1).Range = data
       Next n
   End If
Next i