When you enter master data they will by default be displayed in all selection lists (e.g. when entering lessons) in the order in which they were entered. The teachers' and subjects' master data are automatically sorted in alphabetical order. You can change the sort order for individual views as well as for all selection lists.
To do this click on the <Sort> button in the master data window. You can define the rules for sorting the elements in the 'Sort criteria' dialogue. The example shows teacher master data sorted in ascending order by (short) name. Wherever teaches are listed in the application, they are to be displayed in this sort order.