For help with a chart it's best to post the chart directly from the app so it can be downloaded and opened in the iRp editor.

To remove a rehearsal mark , place the cursor in the space immediately to the right of the mark (in your case both have A-7 chords). Enter the rehearsal mark you want to remove again. Sequential key presses toggle the marks on and off.

Also review this
S and N (Small/Normal chord-font size)
https://www.irealb.com/forums/showth...al-chord-font)

)BOB