question

Since this question has not had any traction for a few days, I'll explain the approach I took get the data I needed.

The patient's Total Travel Distance always accumulates when they are walking, but when they are being pushed in any sort of transportation method, their distance does not increase. Therefore I created a label on the patient (lblStaffDistanceOverall), and this label housed a value that would be an accumulation of distances of staff that was associated with the given patient. Right before the Transport Patient activity, I would record the staff's current distance traveled as the starting point (this was recorded to the patient token, with label lblStaffCurrentDistance). Then upon reaching the destination, I would subtract the value that was recorded as "staff's current distance traveled" from the staff's overall distance traveled. This would result in a distance that the staff traveled in the current trip. This distance would the be added to a label on the patient that housed the accumulated staff distance traveled associated with the patient. Right before a patient was removed from the model, I summed the patient's overall distance traveled, with the label that housed any staff travel associated with patient. This result would be the overall distance a patient traveled, by either walking, or by being pushed by someone else (this patient overall distance would be housed in lblDistancePatientOverall).

The example below shows the equation where the patient's overall distance (357.7187) is added to the all the staff's distances that were associated with the patient (1056.0883) to result in an overall distance of 1413.8071 that the patient traveled in any sort of mode of transportation.