I have a son who's earnings are over $4,050 but still lives at home and i provide over half of his living expenses how would i put him on my tax file?

my son made $20459. and i made $16000.00 but he still lives at home and i provide over half of his living expenses.  how can i put him on my tax file? do i override the question when it asked me whether he made over 4050?