I am working on a Google sheet to automatically update attendance at trainings throughout the year. Attendees fill out a Google form which is dumped into a Google Sheet. Then, I need to be able to pull that data into a different sheet based on school name and last name and timestamp. I am a novice at all of this and am having a hard time figuring this out. Any help is greatly appreciated. Here is the link to the sheets. My formula is on the "ABC School" tab with some notes about how I would like it to act. And, another person tried something on another tab which did not update the way it should and pulled "#N/A" if the first date wasn't right and then stopped pulling for that person. Thanks for your help!
https://docs.google.com/spreadsheets/d/1Zmk4XsvxHC8eG5tEH5Pp1IWLtzp3TnP6qLyCI8t4ZZg/edit?usp=sharing