--THIS MUST BE EDITED IN 'SEE INSIDE' HERE ^^^ --Here's how it works. -Press See Inside and look for Row1, Row2, etc -Notice the "When green flag clicked: play sound" in all -Rows 3 and 4's 'play sound' blocks are disconnected -if you want 4 rows of ports, connect them -if you want one row, disconnect all but one -change the number of ports on a row by changing the sound it plays