Don't stress over memorizing HTML, jQuery, or AJAX specifics. Turns out that memorization is generally an anti-pattern in learning how to write code. Rather, your goal as a pair should be to help one another reason about and understand the code you are writing.
Pairing Day is a great opportunity to begin to develop one of the most important skills a software engineer can have: effective technical communication. We see this as one of the most valuable skills that contribute to success in the job market following completion of the program. As you work, hold yourself and your pair accountable for speaking and communicating clearly.
If you run into any serious roadblocks while working on Chatbuilder that you can't Google your way out of, follow the instructions provided to you by the Mentor/Facilitator running this exercise to reach out to them for assistance. When asking a question, follow these guidelines:
Although you should strive to complete the exercise during Pairing Day, not all pairs complete Chatbuilder before the day is over. In that event, make sure that both pairs have a copy of the code that you have written and feel free, each of you, to continue on your own.
If you do complete the exercise, contact the Mentor/Facilitator. They will have additional exercises that you can work on together that will challenge you in a different way than Chatbuilder does.