Create wordpress multisite

I am looking for someone who are very expert with wordpress. I would like to install the multisite on my wordpress without get mess it up. I want to create the site for the subdomain on my wordpress so I can have the same blog posts as the main domain but I can edit and change my own links in the blog posts for the subdomain if is possible to do that. You must have teamviewer to control on my computer. It should take you no more than 20 mins if you can do it for $25 quick small job that would be great. I am looking forward to speak to you and work with you.