Go to:

• Fees, Billing & Payments module
  
• Invoicing (left menu) 
  
• Invoice Management (left menu) 
  
• Select the appropriate filter options from the drop-downs available
  
• Click the 'Filter' button on the right
  
• Check against the Invoice to be received against
  
• Click the 'Actions' drop-down
  
• Click 'Receive a Payment'
  

• Enter the details into the fields on-screen
  
• Click 'Create Payments' to apply.