To Add a New Domain
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Log in to Plesk. 
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Go to Websites & Domains → Add Domain. 
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Enter the domain name. 
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Set hosting type → usually Website hosting. 
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Click OK. 
To Add a Subdomain
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Go to Websites & Domains → Add Subdomain. 
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Enter subdomain name (e.g., blog.yourdomain.com). 
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Select the parent domain. 
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Click OK. 
