# Updating cross-Region aggregation settings
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You can update your current cross-Region aggregation settings in Amazon Security Hub by changing the linked Regions or the current home Region. 

Changes to cross-Region aggregation are not implemented for an opt-in Region until you enable the Region in your Amazon account. Regions that Amazon introduced on or after March 20, 2019 are opt-in Regions.

When you stop aggregating data from a linked Region, Amazon Security Hub does not remove any existing aggregated data from that Region that is accessible in the home Region.

You cannot use the update procedures in this section to change the home Region. To change the home Region, you must do the following:

1. Delete the current cross-Region aggregation configuration. For instructions, see [Deleting cross-Region aggregation](sh-finding-aggregation-delete.md).

1. Change to the Region that you want to be the new home Region.

1. Enable cross-Region aggregation. For instructions, see [Enabling cross-Region aggregation](sh-finding-aggregation-enable.md).

You must update the cross-Region aggregation configuration from the current home Region.

**To change the linked Regions (console)**

1. From the administrator account or in a standalone account, open the Amazon Security Hub console at [https://console.aws.amazon.com/securityhub/v2/home](https://console.aws.amazon.com/securityhub/v2/home).

1. Sign in to the current aggregation Region.

1. In the Security Hub navigation menu, choose **Settings**, then choose **General**.

1. For **Cross-Region aggregation**, choose **Edit**.

1. For **Linked Regions**, update the selected linked Regions.

1. Choose **Save**.