The online application form for IBPS PO / Clerk for year 2016, CWE-VI is not currently open for candidates, because CWE-VI notification for IBPS PO / Clerk is still to come. (as on 14.02.2016). But the exam date is out, check here for exam date for IBPS PO / Clerk for year 2016, CWE-VI.
The notification of CWE-VI will be published soon on the official IBPS website. ibps.in is only the authorized website which give you notification of IBPS CWE-VI (IBPS-2016). There you should click on tab of CWE PO/MT for notification of PO exam. Click on CWE Clerical for IBPS clerk exam notification.
Online application form link will also be available at www.ibps.in when notification will be out.
You should regularly check the official IBPS website for publishing of new notification. Once published, read the notification carefully and after preparing the required information for online application, go the link mentioned on that website for online application form.