Final answer:
The locked wheelchair should be positioned parallel to the commode for a safe and direct transfer.
Step-by-step explanation:
The recommended positioning for a locked wheelchair when a patient is using a stationary commode is parallel to the commode. This allows for the easiest transfer from the wheelchair to the commode, as the patient can move directly sideways onto the commode seat without having to turn too much, reducing the risk of falls and strain. It is essential to ensure the safety and stability of the wheelchair, making sure it is securely locked in place before the patient tries to transfer.