I like that it makes contacting our team of nurses easy with no time wasted typing in long emails or waiting to be called back by phone (which is often not possible).
The system has crashed more than once which causes delays when we actually need an urgent answer from them asap! It would also help if they had notifications during working hours so you don't have such problems later at night after work but before going home again :( Great idea though - make sure your staff knows how much better their job will become now because all communications are via WhatsApp!!