From the menu under your name, select 'Preferences'.
The 'View Profile' tab of your user profile appears.
Click the 'Edit Profile' tab.
In the 'Full Name' box, type an alternative version of your name (e.g. a nickname).
Click the 'Save' button.
Your display name has now been changed.
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Changing your display name changes the name by which you are known to other Confluence users. It does not affect your login name.
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Your user profile contains your user details (e.g. your display name and your password) and your Confluence user preferences (e.g. time zone and email format). For more information about updating your user profile, please see the documentation.