# Adding benefit sharing preference to my bill scenario
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This section outlines how to add Reserved Instances and Savings Plans sharing group preference to a bill scenario. This allows you to model benefit sharing preference to evaluate the impact on your bill.

For information on sharing preferences, you can read details at [ Reserved Instances and Savings Plans discount sharing preferences.](https://docs.aws.amazon.com/awsaccountbilling/latest/aboutv2/billing-pref.html#reserved-instances-savings-plans-preferences).

## Prerequisites
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The following procedure assumes that you have already completed the [Creating a bill scenario](pc-create-bill-scenario.md) process.

## Procedure
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**To add Reserved Instances and Savings Plans sharing group preference to a bill scenario**

1. Open the Pricing Calculator console at [ https://console.aws.amazon.com/costmanagement/ ](https://console.aws.amazon.com/costmanagement/).

1. In the navigation pane, choose **Pricing Calculator**.

1. In the **Bill scenarios** of the **Bill estimate** tab, choose the scenario you want to add group sharing preference to.

1. In the **Reserved Instances and Savings Plans sharing group preferences** section, choose **Edit**. 

1. Select the group preference you want and choose **Save changes**.
   + If you select Prioritized sharing group or Restricted sharing group, select a Cost Category from the drop down. For Open sharing, you do not need to choose a Cost Category.

1. Choose **Configure**.