Atonio, remove drive belt cover, remove belt from smaller pulley normally the front first then the rear pulley. Install new belt in reverse order. Some times necessary to rotate pulley when installing and removing belt, careful to not pinch fingers. Good luck.
See full detail belt removel, links below.
https://www.youtube.com/watch?v=fBHAM1am-UE
https://www.youtube.com/watch?v=XakWj8YM_P4