I have purchased a license for 5 worksplaces (users accounts) ...
I have purchased a license for 5 worksplaces (users accounts). Do I need to download the installation file five times?
No, you don't. Download the file once and copy it to other computers via LAN or using a CD with this installation file.
Please note that you can use a 5 workstations license for five workstations only. Read this article to learn how to use your activation key.