Canon Elph Sd600
Is there any way to use this camera as a webcam?

Canon PowerShot SD600 ELPH I. "I can use it as a webcam, because it has video, photo and other things so you should be able How I can?

I believe that only Fuji have that option. But you may need a crib is about the price of a normal webcam. So buy one online from newegg.com or ebay.com for as little as $ 15 to $ 20. No need to disconnect and reconnect, etc. .. Good luck!