Shared resources work as your part time employees. Along with your work they would be engaged with some other companies as well. For eg. You need a marketing executive for 4 hours, then the assigned resource would work for you daily for 4 hours and the remaining hours of the day they would work for some other customer. Shared resources are recommended for start ups and small scale industries who have short term assignments. Classic example would be to hire a content writer for daily 4 hours to cater to your company blog.