In order to sell an asset, you must first have deposited it on our IBEx platform.
From the home page, click on the button corresponding to the asset you wish to sell.
If you have never held the asset in question on IBEx, you will need to add an account by clicking on the "DEPOSIT" button as in the example below with BUSD:
Read the instructions on the screen carefully and then send your crypto currency to the deposit address.
Be careful not to get the wrong network and currency and then check the deposit address. You can verify that it is the right token by clicking on the token name ("BUSD" in our example).