Recalculate the estimated revenue

Can I do this task?

1. In the Navigation Pane, click Sales, and then click Opportunities.
2. In the list of opportunities, open the opportunity for which you want to recalculate the estimated revenue.
3. In the Line Items section, modify the list of products associated with the opportunity. (When opportunities are saved, Microsoft Dynamics CRM recalculates the estimated revenue value based on any changes to the products or product quantities associated with the opportunity.)
4. In the Forecast Information section, verify that System Calculated is selected, and then in the Actions group, click Recalculate Opportunity.
5. Click Save or Save and Close.