Add your own groups or have more than group1 group2 or Boys/Girls
were a special school and sometimes our classes are split into 3,4,5,6,7 different groups it would be a good idea to be able to input your own extra group names
You can add your own groups and change their names using Manage > Classes > Select class > Divisions (last button on the right of the grid).
Here you can add new group to existing division (Group 1 or Group 2), change existing group names and short names or delete groups (only when you have more than 2 groups in a row) http://www.primetimetable.com/help/data/division/
(There is also an option of copying divisions and groups to other classes with Copy button)