Yes you need to call another ambulance because you need to take care of someone with a broken arm , head injury (also unconscious) you would need another ambulance to check on the pregnant woman and man with cuts and scratches.
<span>I think the answer would be: instruct the client to bear most of the weight on the unaffected leg and pivot to the chair.
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Hip is a complex and thin bone. Repairing it will be harder than big bones and it will be easier to break again. The client should try to not burden the fractured bone to reduce the risk. At least you need to give the bone time to heal themselves.