Log in to the trading interface directly, click Tools-Options to open the interface, and click Settings.

Specific steps:

Enter the old password, click the circle to change it to a read-only password, enter the changed new password, and then click OK.

Precautions:

Investors' passwords, that is, read-only passwords, can be provided to customers or friends. After logging in, they can immediately see the trading situation of the account, but they can't operate the trading account.