You can maintain custom geo permissions for each of your subaccounts. For example, you can enable calls to specific countries when using a specific subaccount and disable the same countries when using a different subaccount. You can also reset subaccount geo permissions to the default setting.
Step 1: Navigate to the Voice Geo Permissions page and select the subaccount from the Account menu drop-down.
Step 2: After selecting the subaccount, click on Remove override to set default preferences.
For more information, see our detailed reference documentation.