If you want to add a quater note triplet chord movement, you can change that half of a 4/4 bar to a 3/4 bar and the remainder to a 2/2 bar. Do not forget to change the tempo of the 3/4 bar so that 3/4 equals 2/4 tempo-wise. E.g. you want to use a triple chord movment Dm7 up to Fm7 (Dm7, D#m7, Em7 >Fm7), the Dm7, D#m7, Em7 is the triplet, change that part of the bar to a 3/4 bar.

Good Luck!
Tonnie