The specific operation method is as follows:

1. Open the interface of Tencent Mobile Manager, and click the "human head" icon in the upper right corner of the screen to open it, as shown below.

2. In the open interface, click the "Settings" icon in the upper right corner of the screen to open it, as shown below.

3. In the open interface, click the "Permission Management" option to open it, as shown below.

4. In the open interface, click "Floating Window" to open it, as shown in the following figure.

5. Click "Go Now" and go to the system to open the corresponding permissions, as shown below.

6. In the floating window management interface, click Tencent Mobile Manager to open it, as shown below.

7. Permission will be opened, as shown below.