Can twenty-two minutes of service round to 2 units based on a 15 minute unit service?
No, 22 minutes of service would only equal one unit of service for 15-minute units of service. In your example, 22 minutes equals one 15-minute unit + 7 minutes, not the 8 minutes required for an additional unit to be billed. Please refer to the MRO Manual for additional information regarding rounding and adding.