Hello,
Please refer to the following post:
https://forum.huawei.com/enterprise/en/user-level-of-huawei-devices/thread/533127-871
If the level of the account conflicts with the level configured in the VTY, the level of the account prevails. And if authorization by the RADIUS server is configured, the authorization by the RADIUS server prevails.
Summary: RADIUS authorization level > administrator level > VTY configuration level
Any further questions, let us know.