Going for a walk can be very refreshing and enjoyable both for the carer and the disabled person. The movement in a regular wheelchair will help satisfy the urge to move forward if the person is unable to walk on their own.
They need to get out of their bedroom and the building. Going outside can reduce the constant yelling, especially when there is a daily schedule of providing movement stimuli.
A clear space is required for the person to wander around in. A few large sturdy chairs are required in this space for them to flop into when they are tired.