Hi Rita, you can put the chord names below the fret-boards:
\version "2.20.0"
chrd = \chordmode { a1 c1 }
<<
\new FretBoards \chrd
\new ChordNames \chrd
\chrd
>>
By the way, in the second word of your lyrics, a space is missing and
you can see the double hyphen in the image. It should be
ha -- lá -- lo -- san
instead of
ha --lá -- lo -- san.
Best,
Joram
