Enter a dimension pyramid.
Principally used for reports and inquiries, dimension pyramids are used to characterize the summary (roll-up) level and order of the information to be retrieved. Their update is retroactive to the construction of the pyramids and need to be refreshed after creation and modification.
According to the analysis and roll-up objectives, you can attach each dimension to several pyramids to a single dimension type. On the other hand, a dimension can only be attached once to a pyramid (to a single dimension group).
It can also be done within the specifications of the groups of dimensions.
See the documentation on Dimension groups.