Only cost control objects assigned with the Time-Phase Forecast or Manual Details forecast methods can be edited in the Time-Phasing Manual Details panel.
The line items displayed represent a summary of individual line items with the same Cost Account, Resource, and UOM. This prevents the need to display and control potentially hundreds of line items that have been time-phased across a range of periods.
To allow for maximum control of the working forecast, you may choose to first use a calculated forecast method, recalculate the working forecast, then use the Manual Details forecast method to discretely control working forecast line item totals or per period values.
If the Project Exchange Rate Table was not established in Project Setup, the system cannot calculate Cost in Project Currency.