Can I alter the Time dimension to view historical data for few KPIs?

Can I alter the Time dimension to view historical data for few KPIs?

It is not possible to restrict Time filter to a certain date in order to view historical data only for a few KPIs. Altering the Time dimension only for a few KPIs is not possible, it will reflect across all the KPIs. Alternatively, you can define a separate dimension (similar to TIME dimension) in the dbmodel.xml file, populate the required data in the warehouse for this dimension and use the new dimension in the KPIs wherever required. Please remember to remove TIME dimension and use the newly-created dimension in the KPIs that are used for historical data view.