Natalie, I have tried to have 4 live chats a semester and schedule them at various times. For example, 8:00 a.m. on a Monday, noon on a Wednesday, 7:00 p.m. on a Thursday, and 10:00 a.m. on a Friday. I put these dates/times (spread out throughout the semester) in the syllabus and tell the students on day one that they have to choose two to attend. They have to rearrange their schedule to just meet two of the four. OR, you could do 1 of 4 or whatever works for you, but then they all have the opportunity to ask question. I record each one as well so all will have access to the recorded session. It's just something that works for me. Thanks for sharing.