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There are no required fields on the tab.
The "Employee Expense Report (create)" form. The Advances Paid tab
To add a document, click the Add button, click the 
button (in a row that appears) to select a type of document used as payment, and finally, select the payment document. If you need to add multiple documents, use the Pick button on the toolbar (for details, refer to Using the Pick operation).
If an advance has been paid to the employee, in the Amount column you can enter the value that is equal to the amount of all items (inventory items, expenses, and payments to suppliers) listed in this document. If the advance amount is greater than the spent amount, enter the spent amount here. Then, you can inform the employee that he or she should return the unused amount of the advance.
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