In the attached screenshot,
i. On the left "song board", there are eight boxes below the waveform with labels numbered 1 through 8. Number 1 is gray, and 2 to 8 are blue. What are these?
How do I unset an already blue-highlighted box?
ii. On the right "song board", when the song was playing and got to about halfway, I pressed box number 3, which was highlighted in blue and also placed a blue flag in the waveform.
Now however, I again cannot unset the blue-highlighted number 3 box. And I'm unable to move the corresponding number 3 flag in the waveform.
How do I do that?
