Update Needed for Php Based CMS

Avg Bid (USD)
Project Budget (USD)
$30 - $250

Project Description:
I Have a CMS program that 20 different sales reps log in to.

The program randomly dispenses the files to the reps.
The problem is that the system is dispensing the same
file that is being viewed by 1 operator to the other operators.

This means that multiple reps are calling the same file
at the same time. I need the CMS updated so that if an operator
is a viewing a profile NO other operator will be able to view that
same profile at the same time.

IMPORTANT: If you are interested in this project please provide some information
on how you plan to solve this problem. Thank You

Skills required:
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