Go to School > Timetable > Timetable Administration > Timetable Settings > Staff names
Here you will view all teachers within a selected academic year and how their names will appear on timetables and registers. Abbreviations are 3 character identifiers for each teacher at your school. The identifier appears on school, student and room timetables, to save space.
You are able to edit existing 3 character abbreviation (they are automatically generated for each teacher), to set a maximum of 4 characters. Just click on the teacher name whose abbreviation you want to change and you will see a new form appear that allows you to add a new one.
You can choose the format of abbreviations in Student Timetables at the top of the page by clicking Staff Name Format.