You can customize metatopics by adding computed items that do not exist in the database. Computed metatopic items provide end users with access to information they need without storing the data in the database or forcing them to master complicated computations.
Computed Metatopic items can be calculated by either the database server or locally. Locally computed metatopic items are restricted to reference items drawn from the metatopic where the item is placed. Server computed items can reference any items in the original topics or metatopics of the data model.
To create a computed metatopic item:
Select the metatopic for which you want to create a computed metatopic item.
Select Data Model, then Add Metatopic Item, and then Server or Local.
The server or local version of the Modify Item dialog box for computed items is displayed.
Type or use the following buttons to create computed item expression: