# Update ad group default bid
"Update default bid" is a feature that allows you to modify the bid amount for one or more ad group records simultaneously. It consists of various [parameters](/managing-advertising-accounts/modules/bulk-manager/ad-groups/update-ad-groups/update-ad-group-default-bid/ad-group-bidding-parameters.md)—update options and boundaries—providing a flexible framework for your bidding strategies.
To update ad group default bids:
* [x] Select the ad group records you wish to update using the checkboxes in the data table.
* [x] Click on "Update" in the actions bar.
* [x] In the dialog, check the "Update Default Bid" checkbox.
* [x] Select the bid parameters for the update operation.
* [x] Click "Apply" to finalize the changes.
If you wish to understand the bidding parameters in detail, please refer to the bidding parameters section:
{% content-ref url="/pages/G4zmTIDn4uALc4Uv4EwK" %}
[Ad group bidding parameters](/managing-advertising-accounts/modules/bulk-manager/ad-groups/update-ad-groups/update-ad-group-default-bid/ad-group-bidding-parameters.md)
{% endcontent-ref %}
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