Bitcoin exchange KuCoin announced the beginning of sub-accounts support, thanks to which users will be able to manage several second-level accounts at once through their main account.
Up to 100 additional accounts can be linked to the main account. At the same time, the owner can customize their capabilities at their discretion - for example, to limit transfers or freeze funds.
This is info on fees:
The level of transaction fees for Master Account is calculated based on the total transaction volume and the total KCS holding amount of all its Sub-Accounts in the last 30 days. The Sub-Accounts enjoy the same fee level of their Master Account. The trading fee level of sub-account will be updated at 10:00AM(UTC+8) the next day by aligning with the master account.
At the end of last year, Binance added a similar opportunity for its VIP users.