it means... before sending the form to ICSI first you have to approach a company or practicing CS of your choice among notified by ICSI. Then get a job / training there with company or PCS. As soon as company selects you for training they will issue a offer letter (it means like an appointment letter) that you are now joined with so and so company.
Take a photo copy of that letter and the revised training structure form and then send it to ICSI.
Your training period will start now.
GOT IT???