Perhaps one way. Try this play ..
(source data must start in row2 down)

Assuming source data as posted is within A2:A17
(range is inclusive of the blank row below the last section)

Put in B2: =IF(ISNUMBER(SEARCH("Team",A2)),LEFT(A2),LEFT(B1))
Copy B2 down to B17 (include the blank cell below the last section)
[Leave B1 empty]

Now, try sorting the "sections" in col A by the helper col B
Select A2:B17, click Data Sort
Check "No header row" Sort by column B (ascending) OK

Test out the sorting with various changes to the team names
Seems to work ok here
--
Max
Singapore
http://savefile.com/projects/236895
xdemechanik
---
"Freshman" wrote:
Dear all,

I've data in column A and are separated by sections. Each section has a
heading. For example:

ELS Team:
Peter
Ken
Justin

PLP Team
Paul
Mary
Byran
May

QWS Team
Wilson
Tim
Isa

If sometimes later, the name "QWS Team" is changed to "DGK Team" and I want
to sort the teams again in alphabetical order of team name so that "DGK Team"
is in front of "ELS Team". Please advise how can I sort the data by section
name like the example above.

Thanks in advance.