opencart customized admin panel for data entry backend operation

We have a website an ecommerce site build on [login to view URL] we want to perform data entry operation from different parts of the [login to view URL] that we need a customized data entry panel where a person can perform following task. [login to view URL] his own authentication panel from where he logs into the system. 2.A data entry operator can enter the product. [login to view URL] Admin has the right to enable the product and see who has entered the product. [login to view URL] default all the products entered by the data entry operators will be disabled in nature and the admin has the right to enable them. [login to view URL] the data is enabled it will be removed from the data entry operator page. [login to view URL] entry operator can only view the disabled that too entered by him. [login to view URL] can be N number and each one should have their own authentication and can the products entered by them only. [login to view URL] the data entry operator logos out of the system the excel should pop up to the admin email id saying"These may products has been entered by this data entry operator". This is a customized panel and only opencart experts are requested to bid. TIME AND MONEY BOTH ARE PRECIOUS AND WILL ONLY BE GIVEN TO ONE WHO CAN DARE TO DO THIS.