Sorry to state it to you that the site does not allow you to use any of the ads before you achieve the Gold level membership. Now that you have stated that you already have Google AdSense approved, I would advice you to keep working on the site on as many sections as possible to get the Gold level membership.
Keep contributing in the forum as well as Ask Experts sections so that you will be able to get used to the site in a better way. Once you reach the Gold level, you can add your AdSense account along with infolinks if you wish to.
Please note that adding your AdSense account alone will not let you earn revenue from Indiasudychannel. You will need to come up with consistent contribution to make use of it.