Every content item in this list is tagged with all the required labels:

• 33837
• cheque
• configure
• customer
• duplicate-payments
• overpayment
• paid-twice
• period
• remove
• server
• smart
• uninstall

To add a label to the list of required labels, choose '+ labelname' from Related Labels.
To remove a label from the required labels, choose '- labelname' from above.