Visit Huobi Futures https://futures.huobi.li and log in to your sub-account. If it is prompted that you have not currently activated Coin-margined swaps, you could activate through the following two methods: Note: you’re recommended to activate Coin-margined swaps for your main account first. Method A: 1. Click “My” icon on the upper navigation bar and select “Sub-account” to enter into the sub-account management page. Select the corresponding sub-account, click “Set - Trading permissions”, and click the button to enable “Trading access for Coin-margined Swaps”. 2. Then you’ll see the prompt “Successful”. Log in to the sub-account again and you can begin Coin-margined swaps trading.   Method B: 1. Visit https://futures.huobi.li and log in to your main account. Click “Coin-margined Swaps” and follow the prompts to activate the trading permissions of Coin-margined swaps for your main account. 2. Click “My” icon on the upper navigation bar and select “Sub-account”. 3. Enter into the sub-account management page and click “Coin-margined Swaps”. a). If you already have sub-accounts, select the corresponding sub-account and click the button to enable the access. b). If you do not have a sub-account, click “Create Sub-account” and enter the information as required.   4. After your sub-account is created, you could refer to the guide from step 1 to activate the trading permissions for Coin-margined swaps.