Add an online chat support to an existing website

Hi I have an already developed website. I need to add the online chat feature so that interested users can chat with advertisers online. In addtion, this feature should be available also for the website admins. In other words, some certain admin users receive users questions and reply to them. Please see the attached photos and the detailed comments. Thank you. ## Deliverables The job has two main similar parts: 1- In the current website, there are two ways for the publisher to add his ad: He may want to add one ad without creating an account. In this case, he will has a password for his ad. For those who are interested in adding several ads they can create an account to manage their ads in the control panel. In order for the advertiser to take advantage of the online chat feature he should have already created his account and make himself available to chat. If this is the case, the user will see an icon in the ad view page telling his that the advertiser is online. The user should not necessarily have an account or logged in. The user has just to start chatting by putting his name and email (I am not sure if this is a necessary step). 2- Similar to the above functionality, the online chat could be between admin users and the users who are interested to ask any question online. The admin users have to specify their status (online, offline) and the user can connect with any of them. Please feel free and ask any question regarding this project. Thank you very much again for reading and bidding. Zakwan