Goro's guides are definitely useful and helped me a lot when I was interviewing at schools. I interviewed at Lake Erie last year so I can give you a bit of advice.
LECOM may have changed the format, I had a group interview with 2 faculty interviewers and a batch of interviewees. My tips for the group interview are the following:
1) Be courteous and don't talk over anyone (I can not stress this enough)
2) Make eye contact with the group
3) Try to make the effort to remember the names of your group members
4) If a group member says something that you agree with, piggyback off their answer and help expand it by doing something along the lines with "I really like what (insert group member's name here) and I'd like to add...."
5) My interviewers said that if you don't have anything to say, you don't need to force yourself to say something. Just make sure you participate in a good chunk.
I felt the group interview was LECOM's way of seeing how well interviewees worked and communicated in a team environment.
After the group interview I had an optional interview with 2 faculty and yourself which you can use the time to weave in any information that you want interviewers to know about you.
Finally, SDN has a bank of interview questions that previous interviewees have noticed. Link:
Interview Feedback
Use those questions to get an idea of what things LECOM may ask. For answering questions, don't make a script that you will say word-for-word. Just have talking points that you want to bring up. You want to sound natural and be able to adapt rather than a robot that just memorized lines.