To add categories in Homeroom Teacher Remarks Master, follow the given path:
Cambridge Gradebook-->Grade Book-->Homeroom Teacher Remarks Master-->select academic year-->click on get
-->select the respective program-->Click on Add Category or + icon aganist the remarks category.
Note: The grades and statements can also be added against each category by clicking on +Grade or +Statement respectively. The Statements
can be added only after adding the Grades(If Grades are not applicable then you can mark it as Not applicable and proceed with adding of statements)