The pax metric in PaxFlow is calculated based on the following criteria:
All pax (number of passengers) are counted in all activities synced into PaxFlow where:
activity status is any of the following: CONFIRMED, NO_SHOW, ARRIVED, DROPPED_OFF, and CANCELLED.
product vendor is any vendor
start date & time being in the selected date range for a given month
non-combo activities/bookings are counted normally
for combo activities - the combo parent activity is ignored and combo children activities (the operational activities) are counted each on its own (separately). So for example if there is combo parent activity X and combo children activities A an B the logic would sum PAX number from activity A and activity B and add them to the total count.
The following activities are excluded from the pax metric:
Activities that are CANCELLED due to a rebooking, either made within PaxFlow or the source booking system, as long as it can identified as a rebooking.
In this article you can read more about Total Pax Reports.