Hi Dave! This was really useful!
I have 2 questions if I may:

1.) How do you do it so that instead of appearing on the right of the button, the data (start time, end time, difference) appears directly below the button?

2.) Instead of clearing the cells, how do you make it place the data (start time, end time, difference) directly below the cell above it? That way, we'll have a list of the start, end and difference times?

Thanks,
Isaac