Individual Crotchet: you want your entire hair to be parted into boxes/or triangles/star/other and crochet each strand on each single parting
Cornrows Crotchet: you want have your hair in cornrows and crochet multiple strands on each cornrow
Versatile Crotchet: you want the front of your hair parted into boxes/or triangles/star/other and the rest of your hair cornrows