Yes you can. It is a good way to generate income with your hosting plan.
UKC
Which directory do I upload my files into?
When connecting to your disk space via FTP, place your files in the /httpdocs/ directory with PLESK Web Hosting packages.
Once my order has been processed, how long does it take before I can use my account?
Your account will be setup and functional within 5 minutes although with domain name registrations you do need to allow time for the DNS to propagate. Access to the control panels is virtually the instant your payment is received.
Is there a setup fee or are there any other hidden fees when opening a hosting account?
No. There is no setup fee, nor are there any other hidden fees.
In what currency will I be billed?
You will be invoiced in GBP, Great British Pounds.