Login to your cpanel and go to Domain page by click domain icon

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Now click on Create A New Domain

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now add domain *.yourdomain.com and set path to your script install path. if you install it in a subdomain than select that folder path in the document Root (File System Location)

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Hit submit that's all.

Note:: dns propagation take some time to reflect it can take upto 3hour to 74hours. to propagate properly