ACL 1.6
The person may sit in fully supported seating for two to three hours per day.
Without full support, the duration is only for a few minutes.
Avoiding fatigue prevents exhaustion and troublesome behaviour in the following hours, which may be the next nursing shift.
ACL 1.8
The person may sit in a supported seating for three to four hours per day.
Warning: The longer duration requires pressure care, provided by shifting the weight over bony prominences. Exercising while sitting is a good solution.