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On the Estimates by Period tab, you can view the project's duration as specified on the Main tab and you can select project's planning period. The data from the Revenues and Costs and Overhead tabs can be distributed between the periods manually or automatically (evenly by day, that is, proportionally to period durations in days).
The "Project Estimates (create)" form. The Estimates by Period tab
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Then, you can use the nested tabs: Revenue and Costs, Overheads to allocate the estimated amounts to periods.
The nested Revenue and Costs tab
Using the Revenue and Costs tab, you can specify the revenue and cost amounts planned in specific periods. This tab contains two panes: Revenues and Costs.
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The Total Allocated amount column shows the resulting sum of the cost and expense amounts allocated to periods. The Not Allocated Amount column shows the difference between the estimated and allocated amounts. Generally, it should be 0.
The nested Overheads tab
Using the Overheads tab, you can specify the overhead costs planned in specific periods.
The "Project Estimates (create)" form. The Estimates by Period (Overhead) tab
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