Simplify the following text for a Grade 10 native English-speaking person.
Original: Names are assigned randomly by TCWC Port Moresby whilst list B details replacement names for list A which will be added in the bottom of list A to maintain the alphabetical order .
Simplified: Names from List A are assigned in a random order while list B details replacement names for list A which will be added in the bottom of list A to maintain the alphabetical order .