On the Payment Details tab, you can provide information about cash register which is the source of cash and documents linked to this cash receipt. 
The "Cash Receipt (create)" form. The Payment Details tab
In the Cash Register field, specify a cash register which collected the cash from retail sales.
The Planning Document field (or column in Table mode) is available if the Use a payment calendar option is selected on the Administration > Settings > Cash Management Money form. The field is auto- populated in case of the money receipt based on a Money Transfer (Plan) or Money Receipt (Plan) document.
If the Project Costing functionality is enabled in the application on the Administration > Settings > General Settings form Project Costing form, you can link a cash receipt with a related project which you can select in the Project field/column (to find a project, start typing its name or code in the field).
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.
The Amount (Total) field (which is available in Table mode and located under below the table) shows the document amount to which the the sum of the Amount column should be equal.