How to assign a single teacher as class teacher of multiple classes?

I am trying to assign a single teacher as class teacher of more than one class. I want to do this to limit the attendance of the class to only the class teacher of that particular class. So, no other teacher can take the attendance of any other class. I tried making a role as “Teacher” and checked the option of “manage only assigned class“. But the issue is that I can only assign a single class to a teacher. Can you please help me to solve this issue.

Thanks