I want to print also classroom/teacher/subject for each lesson

In print preview, you can right click on any card and you can modify what shall be printed on this card:

You can check if you want to print subject, class, teacher, classroom and for each object you can also specify position of each element.

For example on the above picture the subject is printed in the middle, teacher in the bottom right corner. Classroom is printed in the bottom left, however if the lesson is in homeclassroom for that class, it is not printed.

See also:
I want to print also teachers' names in timetable printout/ need bigger font size
You can also change the texts for each lesson