Hi,
I assume you are referring to the personalize portal option in the portal masthead?
In the popup window that you recieve the entries shown are the ones configured inside the Portal personalization workset which is found under Standard User role (eu_role):
pcd:portal_content/every_user/general/eu_role/com.sap.portal.portal_personalization
For example:
You will see in the personalization screen the following:
Best Regards,
Tal