You can log in using your EasyChair Username and Password. From the top menu that appears (the black ribbon) you choose "submissions" from the left, and then click on "add a submission" link to the right side of the screen. Click on "continue" at the bottom of the screen. Finally you fill out all the necessary information concerning the submission, upload the paper and click on "submit".
Papers must be submitted within the deadline given and electronic submission in PDF is required. The page limit for a full-length paper is 6 pages, with extra page charge from 11th page onwards. Short papers describing novel research visions, work-in-progress or less mature results are also welcome, with a minimum limit of 5 pages.