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If the Enable Project Tasks option is selected on the Administration > Settings > Project Costing form, in the Project Task field (which becomes available) you can specify the particular task of the project to which this payment receipt is related.
Table mode
There is a switch for changing the display mode which is located to the right on the tab, Table Mode. Use Table mode to apply the receipt amount to multiple planning documents and projects. You can add documents one by one to the list in the table by using the Add button on the table toolbar.
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