How do I sell on Bitso?

Hello there, I'm new to the world of cryptocurrency trading and I've heard that Bitso is a popular platform to buy and sell digital assets. Could you please guide me on how I can sell my cryptocurrencies on Bitso? What steps should I follow to initiate a sale, and what are some important things to keep in mind while doing so? Also, is there a fee associated with selling on Bitso, and if so, how is it calculated? Thank you in advance for your help!