Group (Outline) set of data in Excel

I would like to group 2011, 2012, 2013 , 2014, 2015 data separately to see data by year.
How do I do it as when i tried to click Group, it will group all the years together.
even when i do it separately, the group will extend to the final year - 2015.

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Haris DulicIT ArchitectCommented:
Attached is the grouped file..
Haris DulicIT ArchitectCommented:
When using group you need to select one column or row less than your actual range since the excel will use that as a display column. If you select whole year  and group it it will hide all the columns so you need to select jan-nov and the group will be created in dec column or you can select feb-dec and the group will be created in jan column
ceneiqeAuthor Commented:
I select column C to N and Group. this is ok.
But when i select column O to Z, it doesn't group it , but instead extend to Column Z. which means 2011 and 2012 is all into one.

but what i need is to be able to collapse and expand on a yearly basis.
meaning group Jan to Dec 2011, jan to dec 2012, jan to dec 2013 and so on.
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Haris DulicIT ArchitectCommented:
If you are making two neighboring groups then the excel assumes ( wrongly) that it is the same group, to overcome that add additional column and then make group. You can use that column as total for the year or something like that...

Attached is the sample file...

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ceneiqeAuthor Commented:
ok thks, i thought there is some workaround for this as i don't need an additional column for totals.
Haris DulicIT ArchitectCommented:
there is a option that you add an empty column and narrow it down to maximum ...

Anyway there must be blank column or Excel will join the groups,,,,
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Microsoft Excel

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