To request a top up invoice, login to the ProQuest Invoice portal directly or from your LibCentral account. 

Click on the Deposit link, select the deposit group you want to generate a top up invoice for, and then click on the Generate Top Up invoice button. 
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After you click on the Generate To Up Invoice button, you will be prompted to enter in a deposit amount and the product to allocate it to. 

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Once you click on the generate button a PDF top up invoice will be generated. 

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