• Follow the steps to add a bill.
• Select custom option from the given recurring options list
• Recurring popup will appear
• Select repeating frequency for a day or a week or month or year, as per your need
• Select when this recurrence ends from below options:      
  Never : Never end this bill
  On : End this bill on a particular date
  After : After a fixed number of occurrences.
• Tap on done icon on top right corner and save the bill.