How do you use a coin machine at the bank?

Excuse me, could you please explain the process of using a coin machine at the bank? I'm not familiar with the steps and I'd like to know what I need to do. Do I need to sort my coins beforehand? Do I need to insert them in any particular way? And how long does it usually take to process the coins? I'd appreciate any tips you could give me to make the process smoother and faster. Thank you in advance.