Make an addition to a wordpress plugin

I currently use a wordpress plugin that lets me import a CSV file and post its contents to my wordpress blog as individual posts or pages The limitation of the plugin is that for each csv that i import it will only let me choose 1 USER for who the posts will show up as posted by, as shown here [login to view URL] So if its going to add 200 posts to my blog they will all be listed as posted by 1 user Now i dont mind this and I want to keep this option in the plugin but it doesn't look natural and So i want to add one more option and have it so if it adds 200 posts to my blog each one is under a different username. So basically in this same area where you choose a user it would have one more option to have it post based on Usernames I give it ( these are users already in wordpress under users section . So a field where i can paste in or select from a dropdown ( whatever is easiest ) a list of usernames one per line and it would post using those 1 post per username Now if there are MORE posts in the csv than there are Usernames it would just have those additional posts posted by the same usernames i.e If there are 3 posts and I choose 3 usernames the association would be post 1 - username 1 post 2 - username 2 post 3 - username 3 If there are 3 posts and I choose 2 usernames the association would be Post 1 - username 1 Post 2 - username 2 Post 3 - username 1 I need this done in 48hours ## Deliverables 1) All deliverables will be considered "work made for hire" under U.S. Copyright law. Employer will receive exclusive and complete copyrights to all work purchased. (No 3rd party components unless all copyright ramifications are explained AND AGREED TO by the employer on the site per the worker's Worker Legal Agreement). ## Platform wordpress