1.Log into your Plesk Control panel
2.Go to the Websites & Domains tab.

3.Locate the domain you wish to modify, then click Hosting Settings under the domain.

4.On the Hosting Settings page, click the [Change] link next to the Hosting type field, then select Forwarding from the dropdown.
5.You will be redirected to the Change Hosting Type section. Specify the following:
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- Destination address: Type the URL to which you want to redirect visitors.
- Forwarding type: Select the preferred type of forwarding.
Standard forwarding - A user is redirected to the site, and the actual site's address is shown in the user's browser, so the user always knows that he or she is redirected to another address.
Frame forwarding - A user is redirected to the site without knowing that the site actually resides at another location; therefore, frame forwarding should be preferred.

6. Click OK.