The prerequisite is that the Douyin group owner enters the group homepage, there is a setting in the upper right corner, open it, and then you will see a row of things like this, full information member management authority management, transfer group, disband group, group dynamics.

Message reminder, single machine transfer group, then you can operate, click to select the person to transfer, a prompt box pops up, click OK, the group owner has the highest authority in the group.