被录了，罗村发来邮件说有chat session

已经被罗村录了，发来邮件说有chat session

邮件如下：We know that you can't always make it to campus, so let us bring a little campus information to you. Please review the optional open chat session below and feel free to register for the times that you are available.

Feel free to log into the chat for an hour or ten minutes to ask your questions before the decision deadline of April 15, 2015.

If these times do not work and you would like to suggest an alternative time, feel free to email me back with that time and date at gretchen.briscoe@rochester.edu

Once you register for the event, you will be emailed a confirmation with instructions on how to log on

请问这个chat session一定要注册吗？
还是有问题就问，没什么问题就不用注册？

谢谢

有问题就参加，应该这样~